Stock for stock a 06 Z06 would destroy a GT500....you guys really are funny.

Z06........500HP.......3100lb

GT500......450HP......3950lb

Oh....by the way...
The actual figure for the Z06 is more in the 540-550 range. I have seen one on the Dyno..stock @ the RW 478:eek

And after the dealer mark up on the GT500 your within 5-7k of the Z06