no it doesn't take that long I would guess closer to 4-4 1/2 (roughly) the wheels have to come off then the calipers, rear sway bar, then the rear cover, pull the pins and axles out to get the carrier out. maybe more time if the pinion needs to be done as well.And he told me 7 1/2 hours labor to do it. That doesnt sound right to me. A rear end replacement shoukdnt take that ling right?