1965 Valiant sedan vs hardtop interior/seat question

Have a question, looking to buy new seat covers (front bucket bench rear) for a 65 Valiant. Classic and legendary list the back seat as hardtop rear. Called them and they said the rear seats are different from hard top to sedan, one has rounded corners on the base near the doors for leg and swing in room ( mine is rounded and sedan) and they said one is straight across. Which to me makes no sense as the front seat fold on both Hard top and sedan. Have been able to find a few pic of back seat on both sedan and Hard top and both look like mine with the more rounded corners. Anyone else run into this or know if they are truly different? Thanks all