Duster facia transplant

You'd have to change the whole front clip - hood, fenders, bumpers, grille, etc. If your Swinger has the shock absorber bumper brackets, you may need to do some fabricating to get the standard Duster bumper brackets to fit properly.

Your Dart has the "beak" at the front of the hood and the bumper is pointed as well. Mixing parts won't work.