1973 Duster 340 Clone, Whats it Worth

DefinitelyMarker lights were probably shaved because the front and backs wouldn't match, the fronts would have been the recessed markers from the earlier car, the rears would have been the later plastic versions that stuck out, so they probably just filled them all to keep from having to match them.

The owner (possibly the modifier) could have used 1972 Only fenders, and had matching front & rear side markers.

'72 Only Fenders have the 72+ style Side Marker Lights, and the necessary brackets/tabs to use a 70-72 Grille, Latch Support, etc.