Duster Valiant Fenders ????

Were 70 71 Duster Fenders Different in the Marker lights. Or are Valiant and Duster marker lights different. I sold a fender and the marker light has no hole for a light on the back side. The guy that bought it says his other fender has a light and the marker light is bigger. He has a 71 Duster ......Any help... Im confused... Thanks