I have a 74 Duster and am wondering what year model fenders will work and what is different about them. I was looking at the AMD catalog online and they are showing 72-74 Duster Fenders as the same, but Dart fenders as having a different part number. Obviously they need to be 72-up fenders because of the side marker lights. Several people have various year and model fenders for sale around here and I don't want to waste money buying the wrong ones. Will 76 Duster fenders work? What about 73-75 Dart Fenders? The body lines all look similar. Thanks in advance