'75 rear bumperettes -what fits?

I believe '74 Dusters had "fat" bumper guards, similar to '73. But all the '75-'76 Dusters and Dart Sports had "skinny" bumper guards. What do you have on the front?

I have front & rear pairs from a '75 Dart Sport. The rears would fit be appropriate but I don't think that Dart & Duster fronts interchange.