Front diff complete overhaul -- need info

Going to re-gear the front sometime in the next week or two (just finished the rear last night), and while I'm at it also take care of my leaky boots and the ECGS bushing.
I'm swapping the complete third for a 4.56 Nitro set that was used in a trophy truck for three races. I was originally planning on simply swapping the entire third as-is, however, upon removing the extension tube, I found that the teeth that the ADD engage are chipped (diff side of the ADD/extension tube). So now I'm wondering if maybe I should go ahead and change out that shaft/piece/whatever it is...?...which means I'll need to set up the gearset again

So my question, since I can't seem to find much info on it:

Anyone got info on complete front diff disassembly? How hard is it? Any special tools or knowledge needed? Something best left to the "experts"? Any particular parts I'll need to have on hand to put it all back together?

Oh, and I'll need torque specs, too.

Thanks!