Rear seat for a 64 Valiant Convertible

I'm pretty sure the Dart Convertible and Valiant Convertible are the same but I'm pretty sure the sedan is different. . The parts book show a 6208V** for the convertible, 6204V** and 6211V** for a foour door, 6206V** and 6207V** for a 2 dr and 6210** for a wagon. I'm pretty sure the sedan has rounded seat cushion corners where the convertible has squared corners.

Thanks!