1994 b230ft block (with squirters).

I just heard back from the machine shop that is looking over my block.

Good news - crank and bearings all looked good, no cracks in the block, and can use standard size new bearings for all of those. I measured just under 0.002" with red plastigage (below the lower limit).

Not great news - bores show some egg-shaped wear of (if I understood correctly) 3 to 5 thousandths. He suggested boring it to +10 thousandths and replacing pistons, which adds about $400 to the cost. The limit he said he had for bore wear (maybe piston to bore clearance?) is 2.5 thousandths, but the manual I am looking at says rebore if wear exceeds 4 thousandths *and there is excess oil consumption*.

I've never heard a peep of piston slap from this engine, nor significant oil consumption - although I had a blown head gasket going from #3 into the oilpan. Power was great. I don't think these guys are dishonest at all, but maybe mistaken?

I'd like some opinions on this before I order parts and dive in head first.
Cheers!