[stum]

It's much cheaper and easier to just convert your current center or front diff (reguardless of versoin 1.0 or 2.0) to a smart diff. In fact I have a set of the gears and return springs that are new on ebay for a nice deal. All you need is to make sure you swap to the heavy duty diff case, get some smart diff grease, the gears and return springs and build it yourself and save a few bucks and have more options as you get a full spring set.