U Bolts from a Dakota rear end working on an 8 3/4. Has anyone used this or heard of this.

Well all Aussie mopars had "proper" u bolts
have a set sitting in "rustbuster" as we speak

maybe it was just factories in other lands that did it or it was a heavy duty or harsh environment option??

Flat section with a vague waffle pattern on the area around the tube, and a warning in the factory manual about how to torque them and not doing them up too tight.

Dave
I've never understood what the big stink is about the flat u bolts anyway. It's not like they can hold any better than the round ones. Since the spring perches are WELDED to the axle tubes, the rear end cannot rotate regardless of WHICH u bolts are used. It's much ado about nothing.