Lets set the record straight on Valiants and Dusters. Essentially the fenders are the same on both cars from 67 to 76. As Durstya noted and true the only difference is in the marker lights. I have heard some mention about the headlights mounting in a slightly different location on some years but by example I had a 69 Valiant with 76 Duster fenders on it and the stock 69 grille and bezels fit perfect. On the front ends of these cars the differnce is the hood lock metal panel with the spring on it, the filler panel along the bottom of the grille, the grille, filler panel between the two grille sides, and the hood. Even the front bumper will interchange on the bumper mounts from 67 to 72. In fact if you look at a Valiant as a for instance both front and rear bumpers from a 69 Valiant will bolt right on and fit perfect on a 72 Duster. Remember the first year Duster was called Valiant Duster and both Dusters and Valiants share the same wheel base until 1974 when they changed to the Dart platform. Enough know it all rabble from the 'old guy'!!!
Chas.