[jtav2002]

This wouldn't be remotely worth it doing. There are plenty of things to make the car faster, as mentioned. Turbo, top swap, L67 swap, etc. But it won't be worth the money to do what you want no matter how much you love the car. Just for perspective, a member of LS1tech.com got a quote to convert his Grand Prix GXP to RWD with a manual tranny, and that alone was around $20k with the custom work that would need to be done.