Here is some info on that subject.
http://www.xterraownersclub.com/forums/ubbthreads.php?ubb=showflat&Number=493416#Post493416

If you plan on doing suspension mods, some of the stuff that comes with the Offroad end up being replaced anyway. The only issue is the e locker in the rear.

I have a 2005 Offroad and have replaced most of the features that came with it. I still love the locker though.