Originally Posted by big_wasa

Rs pistons are available new. Ford rods are not but you can get forged rods to fit.

These with a standard head gasket give you A Cr of 8:1. No decomp plates or hard to find head gaskets needed but your block will,need to be in very good condition and you will need some light machine work to freshen it up. Deglaze / hone. Maybe decking and scrupulously cleaned.