Either one is good. If you were using Indy heads I believe you would use their Hi-Po's. I would rather use the Edelbrocks. 700 hp with a pump gas, flat tappet, single 4 bbl, 528/572 is easy. I've put a couple together for my buddies and they are great. The new blocks look good. I buy my components from Ray Barton. It will be fun.