We do not offer any parts for trucks or suvs. We do not know anyone who does. We offer parts and products only for cars including but not limitted to Impulse, Stylus, Storm, Sunfire, I-Mark, Spectrum, Elan, and Cavalier.

We manufacture and sell parts for Isuzu cars including but not limitted to Impulse, Stylus, Storm, Sunfire, I-Mark, Spectrum, Elan, and Cavalier. We do not manufacture and sell parts for Suzuki, Toyota, Kia, Hyundai, or other non Isuzu made cars.

Part of what you, as a consumer and customer, are paying for, is the knowledge and expertise to determine what parts fit your car, that having been determined by the vendor through doing the leg work to consult with the product manufacturer or having physically used the part on the vehicle you are looking for parts for. If your vendor can not determine what part fits your car due to lack of expertise of working on and with your specific make and model of vehicle, you have the right to take your business to someone who does. We encourage cunsumers and customers to seek out vendors who do know what parts fit the customer's specific vehicle.
Equally poigniant is that the products we manufacture and offer are the result of our investment of significant time, effort, and expense, and part of what our customers are purchasing with those products is our experience and investment in making those products. We encourage consumers to take advantage of that time and experience by purchasing well designed products, or, alternatively, invest the time, effort, and expense to obtain that experience and technical knowledge to design and build their own products.

We offer only aftermarket performance and racing parts. We do not offer OEM parts. OEM parts must be purchased from the dealership parts department. If you are in some remote location and do not have access to a locale dealership, you should also contact the manufacturer of your vehicle who will be able to assist you.

We design and manufacture aftermarket performance and racing parts. We do not get paid to look up OEM part numbers so people can buy parts from their local dealership. Your local dealership has someone who gets paid to look up part numbers for you, he is standing behind the desk in the parts department of your local dealership. If your local dealership is not able to locate the correct part number for you or has delivered the incorrect part to you, that is between you and your local dealership. You can take your business to another dealership or contact the manufacturer of your vehicle. If you are in some remote location and do not have access to a locale dealership, you should also contact the manufacturer of your vehicle who will be able to assist you.

We design and manufacture aftermarket performance and racing parts. We have absolutely nothing to do with the manufacturing or discontinuation of OEM parts. If the manufacturer of your automobile has discontinued a part and will no longer supply it to you, they will no longer supply it to us either.
Please direct your outrage and frustration about such a situation toward someone other than us.

We manufacture and sell aftermarket performance and racing parts. We do not rebuild engines or transmissions. We recommend you locate a reputable local shop in your area to perform this work for you.

For liability reasons, we do not offer advice or technical assistance, concerning nitrous oxide, building your own turbocharger systems, or building supercharger systems.
We are not willing to risk any possible connection or blame for someone abusing or misusing nitrous oxide, turbochargers, or superchargers and blaming our advice when they damage their engine or car.
We will, therefore, not offer any advice on these topics.

We offer only turbo conversions, custom fabricated onto your vehicle, including installation and tuning.
There is no box of parts to ship, because the pieces of the conversion are custom fabricated directly on your vehicle to meet your exact requirements of the turbocharging system.

For liability reasons, we do not sell nitrous oxide kits.

Our work is exclusively on fuel injected gasoline engines. We have no information on carburators or diesel engines and can offer no assistance in those areas.

As indicated in the online catalog, exhaust systems are manufactured and sold as complete units only and are not available as individual parts.

All of our exhaust systems are production made in production runs of all identical products. All are exactly the same. We will not substitute different brands of mufflers or styles of exhaust tips.
We will not do custom work on exhaust products, such as add sensor fittings, change dimensions or design, or other custom modifications. Our exhaust products are made in production runs, and all are identical.

The Chevrolet Cavalier Z24/Pontiac Sunfire GT header is sold only as a complete unit, including the catalytic converter. Because GM manufactured the original parts with the catalytic converter welded to the down pipe, it is a violation of US Federal law to sell a header and down pipe assembly without a catalytic converter as part of the assembly. It is illegal to sell this product without the catalytic converter and we will not break the law by doing so. It does not matter what country the customer lives in or what their local emissions laws are, we are in the US and the law prohibits us selling a product that eliminates any emissions control devices.

We are a performance parts company. We are not a cosmetic parts company. Dual exhaust on a four cylinder car is purely for cosmetic purposes and has absolutly no positive performance implications. In fact, the added weight will in fact make the car slower.
If you would wish us to have a dual exhaust system custom made for you, we would require an order for ten units. Ten prepaid means an order for ten paid in advance. We will not accept orders for less than ten. We will not collect deposits. We will not barter or arrange groups to purchase. You must deliver to us prepayment for ten units and it is your responsibility to arrange finances be it that you purchase ten units yourself or that you gather nine other people and collect money from them, then delivering payment to us. We will not at any time discuss or entertain any quantity less than ten and full prepayment there of.
It is also your responsibility to deliver a car for prototyping to Seattle, Washington, upon which we will design and prototype the product.
Pricing for a dual exhaust system would be 1 1/2 to 2 times the price of one of our single pipe single muffler exhaust systems as listed in our online catalog.

We have not test fit our Cavalier and Sunfire headers or exhaust systems on any non J body GM cars. What is important to remember is that the engine model has less to do with whether or not a header will fit into a car, and the floor pan and sub structure that the exhaust piping must wind around has much more of an affect on fitment. If your GM car does not share a J body floor pan, it is doubtable that a header for a J body car will fit your car.
If you wish to try to fit our header to your non J body car, we will be more than happy to sell one to you, but we will not be able to accept the return of that product if you try to install it and find out that it will not fit, because installing a header will, in almost all cases, result in scratching and chipping of the finish of that header, even on cars it is designed for, but more so if the header is not designed for the car you are installing it on. We can not accept the return of any products which have been damaged or marred in any way such that they are not in new condition.

We require a prepaid order for ten units before we would consider developping and manufacturing any new header or exhaust system applications. Ten prepaid means an order for ten paid in advance. We will not accept orders for less than ten. We will not collect deposits. We will not barter or arrange groups to purchase. You must deliver, to us, prepayment for ten units, and it is your responsibility to arrange finances be it that you purchase ten units yourself or that you gather nine other people and collect money from them, and then deliver payment to us. We will not at any time discuss or entertain any quantity less than ten and full prepayment there of.
It is also your responsibility to deliver a car for prototyping to Seattle, Washington, upon which we will design and prototype the product.

Pricing will be as follows:

• Single Pipe Cat Back Exhaust: $500 per unit
• Dual Pipe Cat Back Exhaust: $1000 per unit


• Upper Header Only, Ball & Socket Outlet (No Collector Pipe): $120 per cylinder per unit
• Header and Collector Pipe to Cat Inlet Flange (For vehicles with seperate cat and down pipe only): $145 per cylinder per unit
• Header with Collector Pipe And Catalytic Converter (For vehicles which have the OEM cat welded to the down pipe): $175 per cylinder per unit

Our exhaust products are offered in both ceramic coated and non ceramic coated finishes.
Ceramic coating offers both thermal insulation to keep the heat of the exhaust inside the pipe and also corrosion resistance. Keeping the heat inside the pipe reduces under hood temepratures and keeps exhaust gas velocity high, both of which enhance the engine's ability to produce more power. Corrosion resistance protects the product from rust and makes it last longer.
For headers and down pipes, we recommend the ceramic coating to protect your valuable investment and protect it from corrosion. Ceramic coated headers and down pipes will outlast non coated products many times over.
For cat back exhaust systems and after the catalytic converter, ceramic coating is more of a esoteric thing. This pipe does not see as extreme of a temperature fluctuation or as high of temperatures, and aluminized finish is adequate except for cases where the owner wants the cat back exhaust system to look like new for many years to come.

California Air Research Board certification is an expensive and time consuming process for getting headers and other aftermarket parts legalized to pass visual inspection in California. That added cost would have to be passed on to the customer and headers would cost more than double what they do without CARB certification. Because of this, there are no headers for Isuzu, Storm, Cavalier, or Sunfire which have Carb certification, not from us and not from any other manufacturer.
Our headers meet or exceed all emissions requirements and will have no problem passing emissions performance tests for tailpipe emissions.

The Clutch Specialties clutches are the best quality and best performing clutches that are available for under $3,000. Everything short of a $3,000 racing clutch with a billet pressure plate and multi disk system, is going to be a single disk system using an OEM type pressure plate. The main differences between OEM and aftermarket will be the friction material used on the clutch disk, if an alternative disk design is used, and if the pressure plate has been modified to apply more force to hold itself against the disk. The Centerforce product uses a totally stock pressure plate and an alternative friction material on one side of the disk. Centerforce is overpriced and does not perform as well as most other products on the market, especially the Clutch Specialties product.
The Clutch Specialties product is available in three different levels, and which level is right for your vehicle depends on what you want out of a clutch.
The Dual Composite clutches use an organic material on one side of the disk and a metallic material on the other, and offer better power holding than stock, and have the pedal feel and driving feel similar to the OEM clutch. This is a good choice for mildly modified vehicles and drivers who do not want to trade smooth driving for power holding.
The Full Metallic clutch holds more power than the Dual Composite because it has metallic material on both sides of the disk. Pedal feel is still similar to OEM, but the friction material is much more agressive and tends to want to grab, which diminishes the driver's ability to easily drive the car smoothly.
The Full Metallic Plus uses a six puck star shaped disk with metallic material on both sides, and the pressure plate is also modified to raise the clamping pressure slightly. The clutch holds more power than either the Dual Composite or the Full Metallic, and the star shaped disk reduces some of the agressive grabbing nature of using metallic material on both sides of the disk, which results in smoother driving than the Full Metallic, but still not as smooth as the Dual Composite. The modification to the pressure plate raises pedal effort slightly.

Isuzuperformance springs are custom made to order. You can order the springs in any ride height you want. The springs are made in whatever ride height you indicate on your order form.
We caution customers that lowering 2 - 2 1/4 inches with the correct wheel and tire fitment will not cause any clearance problems between the tire and the wheel well. We can and do sell springs to lower cars three, four, or more inches, but we caution the customer that it is their responsibility to crawl under their car and make sure that they will not have any clearance problems with the ride height reduction they are ordering.
We also reccomend for best handling that most serious racers lower the car only as much as it takes for the lower control arms to be parallel with the ground, which is a little over an inch. This amount of lowering produces the best and most predictable handling characteristics.

There are no aftermarket struts available for the Lotus Elan. This item can be obtained only from the dealership parts department.

Both kits are made strong enough for use on vehicles to be used on public roads and highways.
The 83410 uses a 1/2 inch diameter bolt, and requires that a slot be cut into the strut bracket so that it can be adjusted.
The 81250 uses a 3/8 inch diameter bolt with a 1/2 inch diameter raised cam lobe, which allows adjustment without any need to cut the strut bracket.
In theory, the larger diameter bolt is stronger and will be more difficult to break, and if the vehicle is to be used off road, for strenuous racing, or in any way that there is a question of breaking strut mounting bolts, the larger diameter bolt would be the better choice.

White and colored gauge faces were available three years ago. The manufacturer closed, and no white or colored gauge faces are available for any Isuzu or Geo Storm cars from any manufacturer.

There are no body kits available for 1992-93 Geo Storm. No kits for that car were ever made or sold in the US or or in Japan.

There are no body kits available for Geo Storm Wagonback. No kits for that car were ever made or sold in the US or or in Japan.

There are no body kits available for 1990-93 Isuzu Impulse or Asuna Sunfire. No kits for that car were ever made or sold in the US or or in Japan.

There are no body kits available for 1983-89 Isuzu Impulse. No kits that fit the car were ever made or sold in the US or or in Japan.

Most of our products are, as indicated in the online catalog, available for purchase of single units. Some products are indicated as available only with the purchase of a minimum quantity. For products listed as only available in a minimum quantity purchase, we have arranged for the manufacture of these products but will not put them into production until we receive an order for the quantity indicated. This is the only way we can offer these products for a reasonable cost.
We do not have waiting lists nor do we accept deposits for these products. We will accept only a order for the minimum quantity order from an individual or group of individuals.
We suggest that owners interested in these products work together in groups to put together quantity orders for these items.

Our online catalog is our master price list. Any changes in prices or products are made directly to the online catalog first and fore most. We work directly from the website catalog for all of our pricing questions. If you ask us if a price in the online catalog is correct, our reference is the online catalog, because that is our master price list.

All customs and duty fees are the responsibility of the customer or package recipient.
We do not collect any customs fees or duty taxes on any orders. Those fees and taxes will be determined by your government officials when the product passes into your country and you will be billed for those fees or taxes directly by your government.

Missouri State sales tax applies only to product which is delivered within the state of Missouri. If the product is to be delivered to you within the state of Missouri, multiply the total for all product costs, excluding any shipping costs, by the percentage indicated on the order form, and add that number to the total for your order. If the product is to be delivered outside the state of Missouri, there is no sales tax.

Shipping costs for the US and Canada for almost every item in the catalog are listed below the product description. Please look at the end of the listing heading for the company or the product type on the catalog page.

As is stated on every main catalog index page, we accept only checks and money orders. We do not accept any other payment method. Checks and money orders must be made payable in US Dollars and drawn from a bank with a US office, indicated by the address of that US office printed on the face of the check or money order.

The US Postal Service does not instantly teleport an envelope from the mail box that you drop your envelope into, to the mail box on the front of our building. Depending on the schedule for pickup from the box that you drop your envelope into and the day of the week that you drop your envelope into that box, that envelope may sit in that box or at that post office for several days over a weekend before the Post Office even puts it into the machinery to sort it and send it on its way. Any time within a week of a holiday, this delay will likely be even longer due to the days the Post Office is closed and the increased amount of letters mailed around holidays. Once the Post Office begines sorting and directing that envelope, it will take three or four days for it to be delivered to our local Post Office for delivery to us. If the letter requires a signature for delivery, if we are not happen to be standing at the door for our letter carrier to get a signature, he will simply leave a card for us to pick up the letter at the Post Office two days following his initial delivery attempt, and this will further delay delivery.
Overall, we can realistically expect the Post Office to delvier your envelope seven days after you drop it into a mail box or present it at a Post Office counter, at the very earliest, and only after we receive your envelope can we begin to process your order.

Our bank's policy is that a check may be returned as refused by the bank that check is drawn from up to 14 days after that check has been presented to the bank. After 14 days time, our bank lawfully has the right to refuse the return of any check for insufficient funds or invalid account, and does so. So a check can be returned at any time within those 14 days after it is presented to the bank. Our bank, or any bank other than your own bank, has no mechanism to verify if that check has been honored and processed and cleared your bank. This is because that information is confidential to you and you alone. There is no mechanism for any bank to check if a check has cleared another bank. So we must wait out the 14 days and upon verification from our bank that the check has not been returned, then and only then do we know that the check has been honored by your bank, and only after that time will we process any order paid by check.

We are not currently offering any of our products for wholesale sales.

We do not offer any group discounts.

Prices for all items are as listed in the online catalog and those prices are as low as we can set them. As such, we do not offer any reduction in price for purchase of multiple items.
Headers and exhaust systems must be shipped in seperate boxes due to the size and weight restrictions by the shipping company and can offer no reduction in shipping costs for purchases of multiple items.

Part of what you, as a consumer and customer, are paying for, is customer service, and the knowledge and expertise of the vendor to assist you with installing the products you purchase from them either through written instructions or by communicating with you. If your vendor can not provide you with this information for your particular vehicle, you have the right to take your business to someone who does. We encourage cunsumers and customers to seek out vendors who can offer them assistance and customer service for their specific vehicle.

For liability reasons, we can not offer assistance in areas of performing modifications suggested by third parties or people other than us. We really suggest that if you have a question regarding someone's suggested modification, that you contact the author of that material directly.

You've already received a response directing you to the above FAQ entry stating: "Our business is designing and manufacturing performance parts. Our specialty is not repairing or offering advice on repairing cars..."

We are not responsible for repairing your car for you or telling you how to repair it.

We have no information on obtaining shop manuals for cars sold in markets other than the US, and that information is presented completely in the answer to the FAQ above.
Further, for cars sold only in Japan, all technical information will be available only from Japan and only written in Japanese. We suggest that you contact Isuzu Japan for your inquiries.

We do not offer technical assistance on these topics, please consult your local General Motors representative.

We manufacture and distribute performance parts, we do not buy and sell cars. We recommend you check the online classifeids for your car buying and selling needs.

We manufacture and distribute performance parts, we do not appraise or set values for cars. For insurance value, we suggest you consult the Blue Book. For collectors value, we suggest you consult a professional automotive appraiser.

Upgrading an ECU only changes the programming of the ECU and has nothing to do with repairing physical damage to the circuit board. Paying to have a faulty ECU upgraded results in a ECU that is still faulty, but has an upgraded computer program on it. The physical defect of the ECU will remain and the car will continue to function improperly.

We will answer only questions about the products we sell. We will not answer questions about any other topics.

By now you have already received a link to the FAQ entry above. Just because you don't like the answer, doesn't change the answer.

We do not have time to hold your hand while you cry because you do not like the answer to the question you asked.

The Isupage was maintained as a service of Isuzuperformance as a courtesy to our customers for Isuzu parts. Isuzuperformance no longer offers parts for Isuzu cars and no longer maintains the content of the Isupage as Isuzuperformance feels no obligation to offer any general technical assistance or courtesy services to those who are not its customers.