Not sure. Both major vendors, ZZP and Intense, sell the Clevite 77's for $21.99 and seem to be a good option. That might simplify things, and their customer service can answer questions on the phone if needed.
I don't have my digital calipers here right now, or I'd go measure a cam, etc. and look at factory sizing numbers. Probably overkill, though.
I don't have my digital calipers here right now, or I'd go measure a cam, etc. and look at factory sizing numbers. Probably overkill, though.