Were 70-up A-Body back seats the same? Seat ID help needed

That is the same as a 72 up. The way you can tell is by the cut outs in the corner of the bottom for seatbelts. Also the seat back bolts in verses earlier seat has the fold over tabs in the corner. The Duster or Sport style are also different seats then Swinger /Scamp The seats you have look to be swinger but not sure. They are different lengths and heights but can be stuffed in.