Tucking factory 74 bumpers

I don't know about 73-75 Dusters, but I tucked the bumpers on my 69 Barracuda. I adjusted the front brackets back all the way, but it wasn't enough. So I cut about 1.5" out of all the front brackets, rewelded them and then powder coated them. The rear was a bit more difficult due to the shape of the brackets. I measured to see exactly how far I wanted to tuck them in and then cut and adjusted and welded them back together.