pistons
 

have a good 327 sbc block with stock steel crank;;std bore now but needs bored out;;have nice set of 350 .030 over sbc pistons;;can I use them in the 327 block and keep the 327 crank;;if so then what chages if any do I need to make?

You would need shorter rods to use the 350 pistons, unless they had a different pin height than normal...