ok im looking to upgrade my rearend to 8.8 i want to know where has everyone who did this conversion get theres??? did you go to a reck yard like pick and pull and pull one out and then install into there car? or buy a used one from someone? also if i picked up a rear end from a 4 lug mustang could i take my spindles and breaks of my 7.5 and put them on the 8.8?? and whats the avarage cost for the rear end either from junk yard or from someone? im looking for used.