Seats 68' Dart - any recommedations from modern cars that fit or little remod

Purchased car with no back seat and original front seats. Auto wreckers here only keep modern cars and parts that are circulated to make money: understandable. Auctions might have options that could work. Wondering if anybody has suggestions as to what modern car seats might fit with mods.

Someone posted a picture of a new ('15-ish?) Charger/Challenger back seat fitting in the back of an A-body a couple weeks ago in the interior threads. There's a lot of info in there to see who's put what seat, in what car, how easily.

05-09 mustang GT seats look the closest to vintage looking IMHO. Get the ones without the side airbag. I have a 2007 mustang GT and took a long assed road trip. Was in the car 3 days 12 hours at a time. Have sciatic nerve problems and was surprised these things were comfy I had the usual stiffness from a 12 hour stint behind the wheel each day, but not bad at all.