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....