Behind the LS1 with the new personality is the heavy duty six speed from the Z06 Corvette (alas with the requisite skip shift). The 17" wheels were running 225/50 Eagle RSAs - Jim reported that they reminded him of Tiger Paws under heavy acceleration! His best runs were made when shifting at 5,700rpm (the engine redlines at 5,900 and the rev limiter kicks in at 6,000). He brought the car down from 100 to 0 three times in a row without a whimper. In his words he "literally kicked the sh*t out of it." As noted there was no timing equipment available, but he expects to see 0 - 60 times pushing 5 seconds flat and quarter mile times in the 12s when the automotive press get their hands on the new GTO.