.002 Undersize Main Bearings

I used .002 under main bearings (I think from michigan) but that was on a big block, I don't know if they are, or were, available for a small block.
I used them as a shortcut, so I wouldn't have to grind a hard chromed fueler crank, and I was very disappointed in the final oil control, and I never ran the engine.
I think you will be happier if you can find a decent machine shop, and get it ground, rather than look for bearings that might not exist.