I just bought a custom 2008 GT off the showroom floor. Deep Black Clear, Black leather interior, lowered, 20" rims, custom body kit, exhaust... I want to hop up the hp's so I thought I'd look into a chip. They don't have listings for the 08 yet, but I'll bet it's going to be the same one used for 06-07. Any comments or recommendations as to which will give biggest bang for buck?