This may be a really stupid question, so please forgive my ignorance. If my RRS has the rear locking differential option, can I replace it without the rear locking differential? My rear diff is going bad. I had it checked at a shop today. The price they quoted me almost made me crap my pants: $3,500 just for the part plus about 10 hours labor. Yikes! I'm going to have a dealership confirm whether it's a locking rear diff or not, but I'm just wondering your thoughts. Can a locking rear diff be replaced with a non-locking? If so, what's the downside to doing that? There's no off-roading with mine anyway, so climbing rocks etc never happens.