I'm getting a second NX2000 this one is an automatic how hard would it be to change to a 5 spd?

not exactly positive, because ive never done it, but im guessing you'll need the obvious, tranny, flywheel, shiftstick, the rod that connects from the tranny to the shifter(whatever its called), clutch, PP,...i think its been asked before, check the archives and itll help you out