Welcome to the boards!
Ya, there is a TREMENdOUS diff. between the Cobra and the GT..if I had my choice, i'd rather have a Cobra! You might check out getting a 94/95.. Like they said, they are easy to mod, and they are selling cheaper. I have a 94 GT and I love it. You'd be surprised what you could do w/ the engine to bump it up.
Good luck and WELCOME!
Topless In Texas/TNT
