Scored Main Cap Bearing - Ouch

I actually put a new pump in when I pulled the pan the last time. It was hitting a corner of the Miloden pan and I didnt like it. The other pump was older hi volume. I used a stock pump and gained extra clearance and only lost about 5 pounds. Mtr still holds 40psi hot (180) at idle and 65 on hwy with 10/30. For the repair I bought Comp Cams break in oil for first few hundred miles once I decide on flushing. My oil filter and pump tear down will determine that.

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That rod bearing got hot, and probably from a lack of oil.
IMO you might have some wild variances in the clearances of your rod and main bearings allowing good oil flow on some bearings and not much on others.

I would put some serious thought into making them rebuild that motor again.
Or even making them fork over for a different shop to do it.
Obviously the shop that did it has shortcomings in the engine building department that would make me never trust an engine they did.
I'd be afraid to go anywhere in the car that I couldn't afford the tow bill to get it home.

I don't like to put it this way, but it's the way it is.
They have your money and you have a disaster.
Sound like a fair trade to you?