I will try to snap a few pics and see if I can figure out how to post them on here. then you can see what my original fenders look like in the area that matters. are you guys talking about the holes in the fender that are outboard of the turn signal holes that chevy trucks use? the gmc has a part of the grille that covers those holes and the signal light mounts in that part. it bolts through a hole in the fender out there past the chevy signal light hole. if that is the only difference then I could use an earlier set of fenders and just drill that hole!? I don't know where the indent would be, but I will fish the fenders out from under the snow today and see what the $#%*.