Very sorry about not getting back to you, Dave.
I was concerned that a backing plate on my '97 4WD HB would need replacing for the truck's upcoming road worthiness test. So, I was trying to find a used replacement as Nissan wants quite a bit of money for a new one.
I had found a dead '01 Frontier locally that was being parted out, but it turns out my backing plates passed the road worthiness test...just.