http://www.03svtcobra.net/Videos/LankhossVsLeavinU.wmv
Right click save as please
The C6 has stock heads, but has had them ported - he didn't tell us about the heads until after we ran - they were a new addition. He lead us to believe it was still just cam only making ~435 RWHP.
After the races, I told him - "man that thing runs like a 480 RWHP Vette, not 435, you must have some headwork done" - he kind of smiled and filled us in - but wanted to surprise us, which it certainly did,
The C6 had a passenger of similar weight as the camera-man in the Z - for accurate testing purposes.
That night the C6Z ran a ~680 RWHP GT500 - am working on that video, will hopefully post it up tomorrow.