Thanks for that comment.

I did wonder about that too. Why wouldn't the shop think about line-boring the head/top shells to oversize, and maybe turning down the cam's journals, in order to accommodate bearing shells? Too costly? Maybe. But, not quite like a Enfield engine, these 20R heads are getting harder and harder to find. Quite a few 22R heads are out there, but I don't believe they are compatible with a 20R block.

Steve

'80 4X4 Longbed