Yes sir, just a '70-73 Duster/Demon/Dart Sport rear bumper and the brackets that go with it.
The frame rail already should have the bracket behind the panel with the hole in it to locate one of the bracket bolts, you just have to drill it out. The tooling for the axle stub wasn't changed from the earlier style. From the outside it's here
And from the backside it looks like this
Then you just need something to go between the earlier bracket and the later shock mount bumper bracket hole, which is what I did with the angle stock. Although yeah, if I had to do it again I'd just get a piece of 1/4" or 3/16" flat stock and bend a 90° on it in a vise. Way easier than what I did, but I didn't have the flat stock and I did have the angle stock so that's what I used.