Dart Sport bumper on Swinger?

I just picked up a rear bumper for my 74 swinger, and I didn’t realize until comparing it to my stock bumper that it is not the same, it’s a 1973 Dart Sport bumper with brackets.

Has anyone ever put a 73 duster/dart sport rear bumper on a 73+ Swinger? I think it might actually look better than the 5mph bumper.

After searching I’ve found people who do this swap on their 74+ Dusters and Dart Sports successfully, but nothing on a Swinger. I’m assuming that it’s the same process for the swinger, but thought I would ask.