Yeller68,
I had to buy new rear bumper brackets when I bought my bumper and everything bolted up real good. It looks like the pass. side is a little close and the drivers side is out way too far and down. It almost looks like the drivers side brackets are in the wrong holes in the frame. Maybe both sets of brackets are for the pass. side? There has to be an easy explanation all you have to do is figure it out.......
Anyway, I've included a couple of pics of mine.
LockDoc