1974 Duster rear impact bumper(remove,reinstall bumper without it)

Thank you for the detailed pictures blunblu! I'm going to get some measurements this weekend and get some weld-in brackets drawn up in CAD.

No problem!

The outside of the rail has the bracket, you can see it in the picture where I showed the hole on the backside that can be drilled out for one of the earlier bumper mounting holes. My bracket was basically just a copy of the factory piece. I just made mine with a cardstock template and a bench vise. :D