Basically the same truck as the Pathfinder. With a good set of tires, it's actually quite capable offroad. The 98's had the the All Road 4WD system that had a low range plus a "Lock" setting. That setting locked the center diff and put 50% power to both front and rear. On the other settings it varied front to rear depending on wheel slippage.
I think there was an optional limited slip rear diff too. This is really pulling from the depths of my memory here, but I think if there was an orange sticker on the diff it had the limited slip.
Also pulling from even further depths of the memory, you should be able to squeeze 31" BF AT tires in there without a lift and only mild rubbing in the rear during flex.
/ -- \ Pete Hartl - VE6PGH - 0VRLAND
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