apparently...not sure about the quarter times but yes on the 500hp...but for 50k I would much rather put that towards a vette or buy a used vette. Too bad G8's are four doors and kinda ugly IMO.
Its some video on youtube of them runnin down the track an puts down pretty good numbers. I think they have a clean look but when i seen this one gt near me lowered with some black 18's or 19's i could easily notice the sports car/ muscle look to it.