What is the condition of the affected bores? Have you decided to rebuild or replace the engine? If the former, do you have a lead on a machine shop?
Not certain yet, but our guess is the block is good. One visible score is present where a piston looks to have gotten stuck. Other than that, a visual inspection doesn’t yield much. We’re going to magnaflux the block, and if that goes well, bore it out a half to a full mm, and go from there. Crank also looks to be fine.
Don’t want to replace the numbers-matching block. If I do have to do that, it’ll become a different deal, crossing over into restomod territory, as I see it. At that point, I’d be looking at a later M30 and a B35 crank, etcetera. Or an M90. But really not what I want to do.
My mechanic, Wayne (who’s officially retired

), has a boring machine and a magnaflux setup in his home shop. He rebuilds motors from the ground up. My project is actually interrupting one he’s trying to get going for himself. So we’re not shipping anything out, as things stand.