what bucket seat frames are the same as 1970 Dart buckets???

[str12-340]

I'm looking for some seat frames to go in my 1970 Dart with stock type foam and covers. Lots of ads claim that their seat frames are the same for A, B or E and for a span of years (1970-72?). Is all this true or are these one year, one model frames???

 

[Alaskan_TA]

Frames are the same for 1970 A, B & E into early 1971.

After that the metal hinge covers went away.