Well my wife finished pulling the pass head yesterday while I was at work. The pistons look undisturbed. There are valve reliefs in them and no marks. Pic below, sorry about the quality. I plan to get a better one. The valves looks undisturbed as well. If they did hit, it was sure lightly. I'm going to have a local head guy take a quick look at them to make sure they are ok. Would these be considered flat-top or dished pistons? I was amazed at the condition of everything. The cylinder walls looked good (not much cross-hatch left but there are no scratches or ridges etc) and the pistons were not badly caked with carbon, nor were the valves. Honestly the insides of this engine have really surprised me. 33-year old 454 with 153k miles and I have yet to find any gunk or buildup and no major carbon issues. Crazy.