I just bought my wife an '04 GTP and its a wonderful American made car. I have a few questions about the car though. The car is no doubt a GTP, but what makes it a Comp-G ? The car has the 16" wheels vs. the 17" Wheels. It also has stickers that say "Supercharged" on both front doors and the trunk. However it does have HUD, Tap Shift, and Leather. I have been told that it is a Comp-G, but I am just not totally convinced. The suspension feels pretty stiff, but I am just curious as to what we are working with.

Wonderful car though, we really enjoy it in all its stock glory. But we plan on doing some mods soon. What is the bottom end limits? I have read the tranny is good for about 400 WHP.... but what about the block and heads? The 3.8 has been out for so long, but every gen is different. Thanks for any answers.