If I follow what you are saying, doors from say a '74 two door Swinger will fit and match my 75 Dart Sport body with the 72 front? If so, I think I just found a donor. If not, I'll keep looking. :)
The door shells will fit, but converting the window mechanisms over to take the Dart Sport glass and hardware will be a pain in the butt. Not worth it at all in my opinion. Find doors for a Duster/Dart Sport
Here’s a thread showing the differences in the doors to accommodate the completely different door glass and lift mechanisms
