rear seat for 67 cuda coupe, what will fit??

my 67 barracuda coupe doesnt have a rear seat. i obviously want one in there. so the question is off what other A bodies will the rear seat frame fit from and work.

i intend to use seat covers from legendary auto crafters, so i dont want something that fits possibly close, i would imaging this seat had to have been made for other cars besides the barracuda coupe.

i am assuming dart/valiant/scamp 2 door hardtop, or is the barracuda coupe 67 to 69 rear seat frame its one unique animal??

TIA

matt