I've got a 2003 F350, Dually and I'm doing rear brakes on it now. Need new rotors (I've got Powerslots in front with Hawk pads) and I wanted cryo'd slotted powerslots but can't find them for the dually rear. Will it matter if I switch to something else? I need something quick as the truck is up on jackstands (has been for the last 1.5 weeks) while I received the wrong rotors from a company, then the replacements they sent were the same damn rotors. Now they say they just don't stock the proper rotors. I'm about ready to rip someone's head off. Can I use something else? Does it matter if they don't match the fronts? At this point I'm even thinking factory as I need the truck. Suggestions?? Thanks!