You will need to spend 75% of your budget on a pro to port the heads to that level. To me it doesn't make any sense and I can do it myself. Drop a set of Magnums or RHS's or EQ's on it and enjoy. I have spoken with Steve Dulcich many times and he readily admits that porting a set of '302's to that level is really difficult and time consuming. I'm going to say something that will get a lot of peoples backs up but here goes ----FORGET 302 HEAD CASTINGS--Get yourself some Magnum/RHS/EQ's and drop them on. J.Rob