Hi all, I just bought a spool from summit to try out in my 9" (detriot locker was way to twitchy). Well as it would figure i forgot to order an installation kit. Well the rear end has barely any mile on it so all i really want is shims, but i am not really sure what kit i need. I have done a few GM rear end rebuilds before and am more than confident i can pull this off, but as far as what parts the ford design is going to require i am quite lost. So if someone could tell me what shims i am definately going to need, or even just the summit number i would very much appreciate it. Thank in advance - Carl