You are right, Jerry, the number of different babbitt material is extensive. And who knows how many times this engine has been apart. The cylinder bores are clean as a whistle, no scratches etc. We took the front bearing off to check it. It has a large chunk (say pea sized) of the tin/alloy colored material missing from the center. I didn't have my phone with me so unfortunately no picture. It's a ragged hole, with whatever that material is, over 1/16 inch thick, easily flaking off from the edges of the missing piece.
So we, decided to keep moving on with the original engine. Took the head off engine #3, looks like a brand new copper head gasket, head popped off easily. We could see no breach between cylinders etc. Removed carb, manifold, fuel pump, starter, head and started bolting things on original engine. Next step is removing engine from the car...
