If the gears are already in a third member, you can swap the third in without requiring professional gear set-up. One of the nice things about the third member design.
I would have done this, but I wanted the LSD from the OE 3rd on the rear, so I had the rear 3rd rebuilt with OE LSD for $200. Fronts I just slapped right in there. I still have not done that write up yet, haha, whoops I have all the pics maybe I should do that soon.