keep in mind that a full time locker in the front will make the front drive shaft turn all the time, make sure the u joints are good an the angle is good to prevent vibrations. I once installed a lockrite on a d30 with 410 gears and I had to remove the carrier out of the jeep, steering linkage had to be disconected fron one of the knuckles to get it out of the way in order for the carrier to come out and the ring gear had to come out - all for clearance so the lockrite could be installed, not a difficult job at all but it took a little bit longer that I had originally anticipated.