Sure I've beaten a ZO6.
I've also raced a '97 VIper GTS at the track. He got smacked around like a lil bitch too!
Mods: Lid/Filter, Headers, Catback Exhaust, Torque Converter, Drag Radials. (I have an auto)
Only problem is, with the addition of the converter, the computer exaggerates the timing retard on shifts. It happens only on the upshift and sometimes it is worse then normal.
I think if I had "Torque Management" deleted from the computer (which would fix the problem), I could pick up another tenth and a few MPH.
My best run to date is 12.2@110.
In a few weeks, the car will be a solid mid 11 car on motor...
Trapping somewhere around 117.