So I purchased a partially finished 1970 400 ram air lll (block 9799914). Uncle passed away and I was able to purchase. Bottom end has been bored .040, crank shaft ground, forged TRW pistons and the original ram air cam. Unfortunately he is not here to ask what direction he was going, only able to go off receipts from the build. He also had a set of #12 heads that need to be refinished. I believe the compression ratio will be way to high for todays gas with these heads. Is it better to go with dished pistons or just a different set of heads? Would like to get back to original power or closer to 400 if possible. Any ideas or direction would be welcomed information. What would you do?