Quote Originally Posted by Bio248 View Post
GTX's came optional with a 3.5 pulley, but i wouldnt do that unless you had a way to get it tuned.
The only reason the GTX comes with a 3.5 pulley is that it has a tuned PCM, RAM Air, and mostly likely the 2.5" catback exhaust.

For a completely stock car, you are going to blow up the motor sooner than later. But if you are suicidal have money to blow, go for it and report back to us when you blow up your "bulletproof" motor.

Stick with the 3.8 and work on getting your exhaust, air intake and other mods accomplished before dropping a pulley size seriously.