Advice needed on used crate engine...part II

get everything hot tanked
only replace what you absolutely must

probably main/rod bearings
gaskets of course

hopefully not a cam

the pistons are a 50/50 if you have to bore .010 over you will need pistons too. then it gets expensive. so save this roller block for the stroker.

your '73 core... if it's standard bore and does not need machining you can use these pistons, just put in new rings.

in other words use this rotating assembly in the '73 block.
save the roller block for your stroker build....