Thread: need info and input on doing a swap on a series 3 05 grand prix to a supercharged

Originally Posted by FASGP

The Comp G is the step up to the top end above the GTP of these years. They had a few more bells and whistles, including the trans gearing for example...

so it was a gtp? or it was just a super charged gt? how can u tell the difference ive never seen a comp g badge or anything