I've been looking at backrest for my Vegas and the more I look the more confused I get. I have found several different parts no# but the back rest and brackets all look the same. Some state that they're for 03-06, 06-10 and others state 03-10 models. By looking at them in photos I can't see any difference in them. Some even state that they will fit KP models 04-10 as well. So whats up with the different Victory parts numbers on what seems to be the same part???