[ReaganZL1]

I'm afraid only an engineer inside GM can answer these questions but it was stated by Al Oppenheiser a few years back that GM runs theoretical simulations of lap times with various tuning parameters. I remember him explicitly stating the M6 ZL1 1LE was estimated to have an optimal lap time at the Nurburgring of 7:13 which Bill Wise achieved unofficially. It would be really cool if GM could disclose these for the ZL1 and ZL1 1LE with both the M6 and A10 transmission configurations.