Hardtop Duster?

Keep in mind- the competition (nova and maverick) were both true 2 door sedans, with frames around the door glass. Mopar was the winner in that category with a hardtop style door, and a true hardtop in the "23" body A.

You may get away with modifying a 23 body mechanism, but you'd need to fabricate the channels, the weatherstripping, and the trim.

Also keep in mind that the Duster had the sharpest curvature of glass in a production car at the time, so using a 23 body window is also out.