8 3/4 confused?????

I am getting different stories on 8 3/4's in A Bodies. Are they all 43" spring hangers or were the Dusters and Demons 44"? There is a guy selling a Duster Dana with 44" hangers he says came out of a Duster. I measured my old stashed Demon project car and it too measures 44" center to center. Did someone just stick in the wrong rear in this Demon. Do they work with 44" hangers on Dusters and Demons?