Well I'll chime in here being an ex Pontiac guy. The GTO is not faster than the SRT-6. There are a lot of mods for the LS-2 engine however and cheap ones at that. Traction is the problem with the goats, especially the six-speeds off the line. I almost bought one. I also have a G-35, no where near a low 13 second car, so not in the same class as the GTO or SRT-6. So what I'm asking is, why trade for a car that's not faster and has far less head turning ability that the SRT-6? Just to have a back seat? P.S. My insurance rates on the G-35 and the SRT-6 are nowhere near what you are paying for the SRT-6.