Okay, i have done the research, now i have some questions before i begin my build. Will the LS7 heads fit on the LS3 Block...I know that the LS9 used in the zr1 is a modified LS3 motor with a eaton supercharger. I think they said it had LS7 heads. I was not sure. I am trying to figure this out before i start buying stuff. Got the SS2 manual...Love the car. Will post pics as soon as i start with the build...I was a ford guy until i drove the new camaro...I had to have one...