I have been searching and I haven't been able to find an answer. I don't know the technical name for this spot, but where the connecting rod slips into the bottom of the piston then the wrist pin goes through both; will the LS rod slip into a PR3 piston with no issues? I found that with the PCT CTR pistons you need to shave a mm off each side of the rod, I cannot find if PR3 pistons are the same way or not. Please help!