74 Duster Rear Bumper

Does anyone know if an earlier Duster bumper will fit on a 74? I hate those big ugly things on the later models.

I pulled my '74 apart and removed most of the weight from the inner structure. I shaved the bumper bolts and painted it. I decided to retain the EAUs, it is still a little heavier than the earlier style but not nearly as bad as it was.