U-Bolts: To re-use or not?

lemondana said

The factory long nuts are very severe lock nuts. As said before, rust, dirt, and wear from the road elements make it just about impossible to remove them without stressing the U bolt. Buy new correct ones with the flattened arch and the crosshatch from AMK, Not cheap.

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I have worked on a LOT and I mean a LOT of Mopars through the years and not one single one of them ever had the flattened U bolts you speak of. Not ONE. So I will disagree those type are "correct" as you say for old Mopars. Now, they "might" be a good upgrade, that I will go along with. However, totally not necessary.