I just saw this thread and had to reply, the owner of that car is one of my good buddies. Its a c6 with Cam, longtube headers and Corrisa Exhaust. And tuned with LS2 edit. He put down 405 to the wheels I beleive. It is a nice car. But he sold his 03 Cobra, that put doen 625 to the wheels to get this car. None of us can figure that out. He even did a solid rear swap on the cobra. And he works for ford. Oh well!!!