It can be done. This is a ic of me holding a 70-72 bumper up to a 75 Duster. May need to drill some holes for the bumper mounts though. The 1/4 panels are a little different on the later cars so it looks like there will be a gap there but you could allways weld in a peice to plug the hole. Thats how earlyer Duseter/Demons are. I have been looking at early Duseter and I tell you the fit is not all that good on them eather.
I am going to put it on there. I think it looks way better than that 80 pound thing I took of. Early bumpers and mounts are about 20 pounds so you get to take 60 pounds off of your car too!