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As long as you never put it in 4WD, it shouldn't cause the front diff any problem as the auto hubs would be disengaged in 2WD. If you have an open rear diff it would sure give the spider gears some exercise but for a short distance at reduced speeds likely be OK. The clutches in a suregrip rear diff would be up in smoke in pretty short order IMHO.

Kevin



I replaced the stock factory locking differntal with an Aurburn locking unit a few years ago. So i guess if i had to put on the spare it would only be on the front that i could do it, correct??