Ok, going to build z6 for DD, block and head are not milled/decked, but I will resurface them so Iam probobly se .010" milling on them together, so, need opinion on pistons, pg6, p29, pm6, which are better for piston-deck height, so they wouldnt sit above the deck. which of them will have better valve clerance with bisimoto stage 2/3 or crower stage 2/3 camshaft? I will run on 93gas and it will be tuned. So, realy I need to know with of them to buy, to get good bump on CR and be safe to run, without and then with upgraded camshaft... Thanks alot!!!