Hey Miller, hope i can help. Anyway, actually, the GTP and the GT are two different packages, as im sure you know. Only one of which is actually supercharged, which is the GTP CompG, not the GT. I dont see how the GT you're talking about is supercharged unless it is an aftermarket installed supercharger. Not downing you or calling you a liar, but what is it they say..."an informed consumer is a better consumer" or something like that. Anyway, iirc the Competition Group ("CompG") stopped in 05, they started doing the GXP in 06 instead. There are a few differences in the interior of the GTP vs the GT, such as Heads Up Display, Tapshift, and i think the GTP may have a lil more chrome on the inside than the GT. and, oh yeah, of course the GTP has leather interior. You can get leather interior on the GT but it costs extra. The suspension may be a little different/better on a CompG vs a GT because it is a "Competition Group" package. Hope this helps! Good tase, by the way, good luck with the purchase!
