I dont know if the belts are the same but I know the rear seat bottom is different from 71 to 72. I tried to put 72 seats in my 71 duster and the rear seat bottom would not work because the hump is taller on the floor under the rear seat in the 71 car. I suppose I could modify the hump on the seat frame to make it work. The bucket interior was out of a 72 Demon and I tried to put it in a 71 duster. I will probably just end up trading it for the right stuff.