Easy way to tell the differemce between Dodge and Plymouth fenders is that a Dodge fender is narrower behind the wheel opening. The Plymouth is noticably wider behind the wheel opening. Also the marker lights. If it has a small squarish looking hole with a point facing forward (looks like a little house on it's side) with 2 small holes (1 on each side of the sideways house) it is 72-later. If it has a rectangle recessed marker it is for 70-71 style. Oh and I believe 73-later Dodge fenders don't have a fender extension.