All Duster, Demon, and Dart Sport doors will fit and match all the body lines.
The door handle location, interior panels, and window hardware and glass all vary by year. Main categories are ‘70-72 and ‘73-76, but the glass and window hardware varies a lot more than that. ‘70-72 glass and hardware mostly interchange, ‘73 is a one year only gig, and ‘74+ went to totally different window lift hardware.
None of the ‘73+ interior plastic is reproduced, except for maybe the door handle cups. The door tops and quarter window surrounds are not, and they’re pretty hard to find in good condition and difficult to ship too, especially the rear sections.
Fun fact, all 2 door hardtop and sport body door shells will interchange ‘67-76. A ‘68 Dart door shell (no wing vent installed) will bolt right onto a ‘76 Duster. Converting the glass hardware is more work than it’s worth because there are tabs and mounting locations that are different internally, but the body lines all match up and the door is the same length.
I’m switching my ‘74 Duster doors for a set of ‘71 Duster doors to go with the rest of my ‘71 Demon tribute. I already went to the earlier metal rear quarter window surrounds. Easier to convert the metal interior panels than find a set of unbroken rear interior panels.
