Is there a rear seat difference between a 72 Swinger and a 72 Duster?

My Scamp had Duster covers in it when I got it. The back seat cover was a little tight so I'm guessing the Dart/Scamp back seat is a bit wider, front to back. It didn't look hateful, you couldn't really tell they were tight until the back seat was out of the car. Unfortunately, I only have pics of the front seats.