a-body floor pans

As far as floor mats, not enough differences that it should matter. There are some slight differences in floor pans, mostly between Duster/Demon and Swinger/Valiant back where they join the shoulder where the back bottom seat cushion sits on it but it's not significant. I cut the floor out of a 2 door 71 Swinger and used it to patch the floor in a 71 Demon and saw there was some very small differences. In 75 they stamped the floors with a bump for a space for the catalytic converter. I also saw on my Sport 75 the factory carpet was one piece instead of 2 piece like on my Demon.