'75 rear bumperettes -what fits?

I'm getting a rechrome rear bumper for my '75 Duster and still plan to use bumper gaurds. but mine are a bit rough to spend $ on rechrome. So, plan to post a 'wanted' but first would like to figure out for sure what interchanges. From what I see it kinda looks like all a-bodies run the same back bumper and guards from 74 to 76? Any help appreciated.
Keith