74 Duster
Welcome!
There are two different bumpers for '74, one for the shock mounted front bumper which ran from the beginning of production until about December, and one for the standard mount front bumper which started in December and ran through the end of the model year. Neither is reproduced, but make sure you get the right one if you're buying one. Your best bet is to have yours re-chromed.
Here's a link with some more info on the '74 bumpers
What the rubber bumper is going on in 74
and pictures-
Standard (non-shock) mount '74 bumper
Shock mount '74 bumper
And worse, the '75 model year got shock mount bumpers again. And '73 had a slightly different style as well. So, the '74 bumpers are a one year only deal. Well worse, as the shock mounts ran from August '73 to December '73 sometime, and the non-shock mounts were late December '73 to July '74.
Based on the profile of your car, it looks like you have a standard mount bumper on your car (shock mounted bumpers stood out further).