360 compression issues. pick a piston??

moparmat2000 said
I ran my combo thru a compression calculator with .039" headgasket, 5cc valve reliefs with flattops, and 65cc chambers with a .030 overbored 360 stock stroke i get 10.58-1

Thats pretty high. I am trying to keep it about 9.8-1 just in case i get a batch of bad gas.
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Your calculations look like they are based off of flattops with "0" deck. If the block you will use hasn't been decked yet, you will end up closer to the compression you are looking for. "As delivered" OEM deck heights are usually taller than spec calls for.