my opinion is the haynes has exaggerated the ratings making them appear harder than they are...especially if you compare the k10 with k11 manual.
K10 Manual complete instructions on the strip down / rebuild of the gearbox.
K11 Manual ...its complicated, take it to nissan. ...pah.
yeah as moddedmicra says, just about that easy...though you'll need a driveshaft nut sized socket, and you wanna undo that before taking off the wheel. 
