Here Bud all the answers ==>>>
4WD Systems LOKKA
And 2 of each...
Installation is not "that" easy. You need a work shop vice large enough to grab hold of a crown wheel/diff housing, air gun to undo bolts for crown wheel (bitch to tension back up without a press)....
It is doable DIY but you stil need some equipment most/some DIY people don't necessarily have.
If you are not careful you can easily ruin the end half caps threads as you trying to line them back up while not disrupting the backlash/end float adjustment nuts.
It is still a big job considering that you have to dismantle/remove each hub, pull half shafts put etc. You may coincide this job with redoing your CV joints lubrication and inspection, wheel bearing repack and seals change or any other front end jobs you've been putting off for a while...
Don't foget that you will need to either convert your auto locking hubs to manual only or replace them with manual hubs.
The LOKKA clicking when unlocking will drive you insane if you don't on hard surfaces especially round corners at faster speed.
Regards