How is the Wrangler NOT an SUV? It's ALWAYS been an SUV.

You've got to be kidding me...

And you're right. There isn't a SAS kit for the Liberty.

But there is a 7" lift, long-arm suspension kit. For less $$ than the '05 Xterra's 5" suspension lifts will cost (as estimated by their manufacturers).

There's also plenty of options for a regular lift kit, in the 4" range, for under $500.

There's also t-case gears, differential gears, and underneath protection, from several different manufacturers. All for lower costs than anything you can get for Nissan.

And whether you like unibody or not, Jeep proved it can be made VERY well, with the XJ. So just 'cause it's unibody, doesn't mean it's necessarily bad. I've seen plenty of tricked out Xj's on trail. Most of which are even more capable than the SAS'd Xterra's, just because of the aftermarket support.