A body door interchange

You don't want to swap Dart doors onto a Duster/Dart Sport/Demon or vice versa.

The door skins are identical, 67-76. Same length, same body lines. The shells are almost identical. They started out the same, same stamped part. But they don't end up that way. The glass isn't the only part that's different, the regulators and all the hardware get mounted in a completely different way, and there are tabs and supports spot welded into the doors that would have to change to swap the regulators and hardware. All the info, pictures of the differences etc are here Demon door?? Which others fit?

It's possible, but you probably won't want to do it. That said, all my info was for the pre-73 doors. I know on the 74-76 doors a lot more interchanges, it's probably easier. '73 is one year only hardware, and it's totally different than 74, so that would still be work.