Does anyone know? Where the build sheet on a 90 Trans Am is.

 

Build sheets were not always included in the car. If they were included in the car there was no exact location (under the carpet, behind the dash, inside a bumper cover, etc., are just a few locations where some have been found). The build sheet could have also been found by previous owners or the dealership.

Understand that the build sheet was not meant to go to the end customer. The assembly line workers would throw away a lot of the paperwork that was generated while building the car before the car left.

 

Do you know of any other way to tell of a Trans Am is a GTA.

 

http://www.gtasourcepage.com/newauthentication.html

That page has a good authentication guide

 

Think from what I see,It's a 90 GTA.305 5 speed.But the motor and tranny have been swaped.It still has a 305 but it has a carb and they replace the 5 speed with and auto.Do you have any idea of the vaule and rarenss of the car.

 

It would be relatively rare, and have a small value bonus being a 1990, IF the car were in original condition. Being a modified car, it's a pretty safe assumption that parts are missing, the condition is poor, etc. As a modified car, it's value to a collector is extremely limited. Even restored, it's not one of the big hype cars that would bring the big bucks.

 

What Drew said, it's value is less then a stock 1990. Personally I like the 1990 a lot as it got the Speed Density TPI setup and the new interior with the older body style, however a carb swap destroys most of the value to a good portion of the population who would value a 1990 for it's uniqueness/rarity.

 

I like the 1990 too, however, you lost a few features the GTA had in '89. The split back rear folding seat was discontinued. The UT4 radio with steering wheel radio controls was discontinued due to the new air bag requirements. The custom molded interior door panels (also available on T/A's with the custom interior option) were discontinued as well.

Since '90 was a very short production year, 4 months I believe, they are relatively rare compared to the other years. However, with the engine/trans swap, any collectability the car once had is pretty much gone.