Quote Originally Posted by GTPpower View Post
With slicks and a good elevation, you could hit 12's. Without slicks, if you can drive, you're probably looking at low 13's at best.

Heads don't affect a turbo much. It's no problem making over 600whp on stock heads.
If I ever ran on street drag radials I wouldnt have had too many problems running 11.8 on my old turbo gtp setup.