Where'd you go? Assuming you have a good block, I'd do minimal overbore and target 11:1 maximum. 3.91 Molnar crank/ 270 TF heads/ HS rockers/ 265ish @ 050 .680" net lift roller 108lsa/ Alloy caps and main studs/ partial fill block/ Indy 4500 intake with a good clean-up and a 1050 4500