while I'm thinking about the doors, I'm wondering what to use and how to go about cleaning up the chrome finish on the handles? Any secret cleaning and polishing rituals anyone wants to share?
if the chrome is pitted and faded out you cant fix it short of rechroming, but there is an easy answer.
go to your dodge dealer and buy a pair of new exterior door handles for a dodge pickup from 1973 up to 1993 (before the new ram bodystyle) . use your buttons and linkages from the old duster handles, same door handle as your duster. this casting goes back to 1966 on B bodies and C bodies, and 1967 on A bodies.
BTW the front fender marker lamps are the same as a dodge pickup from 1981 to 1993, and plymouth horizon/dodge omni from 1978 to 1987