Thread: G6 GTP or 04 Grand Prix GTP??

G6 is just a High Output 3.9 liter V6 that is claimed at 240hp while the GTP is the Series III 3800...you can do bolt-ons to the 3900 G6 but it is still N/A and won't make the power or have the aftermarket support like the L32 in the '04 GTP does. Intake, Headers, Catback and a tune on a G6 vs. a Intake, Headers and a tune on a GTP and it'll walk ALL over the G6...only thing I like about the G6 is the retractable hardtop...coupe option...and SIX SPEED I'd still take the Grand Prix as it is faster and cheaper.