Duster Bumpers and Marker lights

I have a couple of questions for you guys. There is a possibility I can get my hands on a 1973 Duster within the next year. I was looking at glass parts on AAR's websites, and it made me wonder...

Will 1970-72 bumpers fit a 1973 duster? I like the looks of those a lot better than the 73 ones.

Also, what is the difference between the marker lights from 1972 to 1973? I was looking at the glass fenders from AAR and it said "Side marker lights marked for 70-72 but not pre-cut", but the fenders are listed as though they work from 1970-1976. What exactly do they mean?
Author: admin