I am restoring a 57 country sedan wagon with a D code 312. Opened up the motor to have a look at the bearings and found it to be pretty fresh. I did find something that I had never seen before. The rod nuts had pal nuts on them. A couple of them were bent like they had hit something but I couldn't see any witness marks on the pan or block. The motor had a rebuiders tag on one of the freeze plugs I imagine they put the pal nuts on during the rebuid.
Never encountered them before and wondered if I should keep them or remove them ?

Pete