4dr/2dr rear seat interchange

[81cutlass]

My 2+2 GP had some mice make the rear seats a home when the previous owner had it. Instead of keeping what there was the PO burned the foam off the frame and threw it away.

I am looking to pick up a new rear seat "core" (foam and frame) and buying some repop upholstery. I am having trouble finding a 2dr local with a good rear seat. Are 4dr rear G body seats identical to 2dr? Also, are all the seat foams the same between BOP or Chev? Are the plush style "brougham" seats the same as standard base model cars?

Thanks

 

[81Regal]

I have a whole stack of rear seat cores from 2 door cars but I'm sure the 4 door seats are the same. Wagons are different.