All the 67-76 Door will interchange to either add or delete the vent windows
To use 67-72 Dart Swinger/Valiant Doors on a 73-76 Dart Swinger/Valiant you will have to change the trim that goes in the window channel to have the door shut at all and vice versa for 73-76 doors on a 67-72
To change the doors from a Duster/Demon/Dart Sport onto a Dart Swinger or Valiant 2 door the glass will need to be changed to do so.
73-76 Duster/Dart Sport Doors will bolt up to any year Demon/Duster/Dart Sport
73 Doors are one year only because they have a different glass and mechanism for the windows than 74-76.
This is why only 73 glass fits in a 73 door because it is a one year only assembly
