Mopar R1 block

12swinger said
Probably a 4.060 bore would help in getting rings and maybe even pistons.

FABO member @Rocket has the caps you want for a great price. Splayed caps are overrated.

Nice pick up. If it sonics well 4.125 is a good starting point.

There is something to be said about ring seal, deck thickness and cylinder wall thickness. Try and not give up any more than you need.