Any difference in Challenger rear seats FRAMES from 1970 to 1974?

[Cuda Cody]

Not considering the covers, is there any difference in Challenger rear seats FRAMES from 1970 to 1974?  Will any year fit all years from 70 to 74?

Thanks!

~Cody

[Challenger6pak]

There are two rear seat frames.  One for the hardtop and one for the convertible.  A convertible seat frame can be made from a hardtop frame with some shortening and welding.  All years are interchangable. Visually the seat covers are different and the material that separates the foam from the frame and springs is different between years.
Tod

[Cuda Cody]

Thanks!   

There are two rear seat frames.  One for the hardtop and one for the convertible.  A convertible seat frame can be made from a hardtop frame with some shortening and welding.  All years are interchangable. Visually the seat covers are different and the material that separates the foam from the frame and springs is different between years.
Tod