Someone wanna help find the cause of death?

First, it's a 383 but i figure this is the most relevant board.

I recently bought the complete, but torn down 383 for $800.

Now i know why it was torn down.

It came with every rod bearing except a single pair.
You reckon the rod got chewed up, plugged some oil passages and seized 1.5 cylinders?
I checked all the pistons, every one except the two pictured are fine. The one on the left though, the rings are stuck and so is the wrist pin so i reckon that one had some problems too.
All the other bearings show almost no wear on them though.

Really hoping i didn't just buy a paperweight.

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