Good evening everyone. I have just registered with this forum. I hope to learn alot from this forum and get some great advise from the experts. My wife and I just purchased a 2007 Grand Prix GXP....47,000 miles. This is not the 1st grand prix we have own but 1st GXP...so far lovin it!...But I am like many and cannot leave anything stock... So feel free to share the secrets, mods, pros, and cons....Thanks!!