The FSM doesn't specify anti-seize on the plug threads but it does have anti-corrosive, rust resistant, and adhesive propoerties. See following web site:
http://www.valco-cp.com/Anti-Seize.htm A thread lubricant/sealer like Teflon paste is different than anti-seize. Basically, anti-seize allows the plugs to be removed at the next gear oil change with about the same torque it was installed with because there is no corrision.
The 2002 version of FSM specifies a fill & drain plug torque of 35 ft-lbs (acutual 36) for the rear differential. A torque of 27 ft-lbs is specified for the transfer case plugs.