Early A rear seat quetion

Are the rear seat frames (Upper and lower) the same for a 1965 Valiant and a 1965 Dart. I want to make sure the dart seat vinyl will fit my valiant rear seat frames before I order them. I am switching to buckets but I do not see where you can get a set that matches pattern front and rear with buckets in a valiant. The dart was available with buckets.

Thank you
Jason