Wow, that thing looks like brand new.
Maybe I should try washing mine once, but I figure all the dried mud and dust on it works like SPF 50 sun block to keep the paint from fading even worse.
Good luck, I had a hell of a time finding a rear bumper for mine (it was missing too), I found a Cherokee bumper in a junk yard that fit in place perfectly but wasn;t in perfect shape. I've come to the conclusion after reading here that original Cherokee owner may have put a Comanche bumper on it at some time for some reason.
I still think this looks awesome...
I'd figure out a way to mount the plate if I could find anything that looked this good.