Those damn Z06s are pretty fast. I rode in the passenger seat of the new ls7 and that bitch will haul some ass! What kinda turbo do you have??? Slap a T 78 on there and you should not have any problems with Z06s. (except for the new one) I know that there are a bunch of guys here that will handle those damn vettes.......you can tell by the build thread (reign maker, IJ, Kwnate, duane, etc)