I ended up scoring a near complete interior from an 89 TTA that I found in the boneyard. Unfortunately the carpet was too trashed (and so were the seats) so I left them. But the plastics are in pretty good shape so I rescued them. I was looking up to see what carpet color would match the interior plastics though, and it looks like its between medium doeskin and cognac, but I'm still unsure. If anyone knows which carpet color goes with an 89 Turbo Trans Am, let me know, especially if the two I mentioned wouldn't go with the interior. Thanks.

 

Cognac is the best match.
Here are a set of mats in my TTA from ACC that are Cognac. They are a shade darker but overall it is a good match. I actually think the color is nicer then the original.
What was left of the TTA in the yard? Does it still have the VIN on it?

 

Not much unfortunately. She was pretty beat up. Seats were cracked and torn. Engine and dash was stripped. Rear hatch and front windshield were shattered, glass everywhere. Tail lights and wheels were gone. The hood was in good shape though. I think it still had the VIN number on it. I will post it next time I go to the yards, if it's still there.