70 Plymouth Bucket Seat (Frame) question….

Have started the process of finding and buying a 1970 Roadrunner convertible. So far all the cars out there in my price range have front bench seats. Everything needed to convert a bench seat column shift (auto) car to a floor shift/bucket seat car is pretty much avaialable (either new or used) except for the bucket seats ( I know the frames are a bit different between the Plymouth's & Dodges...Plmouth seat backs have more of a curve to them).
So I am asking which roadrunner bucket seat frames are the same? I think 68-70 but thought I would check with you more "versed" Mopar owners. Thanks
Author: soundhd