"Leveling Kit" is industry double speak for "Lift Kit"...much like "Sport Bar" = Roll Bar, etc.
Anyway - the X is designed from the factory to run a bit nose down, for steering, braking, and load carrying reasons.
If you "Level" it, you are changing that....but, some people go for the "Look" over function....
Anyway - if you want to raise the front end ("Level" the X...), just adjust the T-Bars...the factory built in an adjustment for you, as t-bars sag with time...and its purpose is to let you compensate for that.
The X is set up for about a 1" lower nose than tail, and the T-Bar adjustment can go about 1.5" HIGHER than "level".
So - if you want it level...its a free adjustment you can easily do in the driveway, etc.
If you want a lift, it just depends on how high you want to go.
Are you really meaning to want it "level", or do you want the entire truck to sit higher?
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- TJ
2001 Xterra '03 VG33, SE 5 spd, 305/70/16's, Revolvers, UBSkidderz, Doubled AAL's, 3"SL/2"BL, winch/bumpers, skids, sliders, OBA, Snorkel, pine stripes....
Friends don't let friends drive stock.
http://www.gifsoup.com/view/501230/tj-tackling-crawlers-ridge-o.gif