NOS 1972-76 Plymouth Duster Passenger side Fender

Kern Dog said
That is a 73-76 fender. The 1972 model had a tab to mount the steel panel that supported the top of the 70-72 grille. I see no tab on that fender.

You are right, as it sits. I have seen folks simply weld the needed tabs in place to make it work for a '72. Not too difficult.