I'm going to go out on a limb and say post to h/t are the same.
I know 4 dr bottoms are different than 2 dr h/t.
I don't think they changed anything from 67-9 to 72 as far as the frames.
I do know I used a nice 74 4dr top half with a new cover and installed it in a 69 Dart 2 dr h/t with no issues...