The engine was ran to the point of locking up. Apparently when it cooled back down my relative cranked it up again to get it back to the house.
By the time I knew something was wrong all 4 rod and all 5 main bearings had spun.
One rod end and one rod journal are almost black from the heat. This rod bearing was found in the small pieces when I pulled the oil pan off.
I have not pulled the head off to look at the upper end but from the fine sand that was coating the entire intake manifold and the find sand I found in the oil passages going to the main bearings I don't think I want to reuse any part of the engine except the block head and valve train.
Going off the block numbers I best price I have found on parts are out of Australia where these are more plentiful. I do know the pistons and injectors and the pump are different in a truck engine and a excavator but I would not hesitate to put a truck engine in it if I can find one at a good price.