duster /demon glass interchange?

The door glass regulator, guides ,tracks, stops and provisions in the structure of the door for these components are not the same for those two years. It would be much easier to get a 70-72 glass. BTW are you looking for clear or factory tinted. I have at least one good used clear drivers side here from a 70-72 Duster/Demon already out if you can't find one closer PM me if interested