My parents had an AMC Eagle back in NW Pennsylvania. My mom drove it back and forth to work and my dad drove it way back into the woods to work on the oil wells. The AWD unit had a pneumatic switch that would lock the center diffy and with LSD rear it was pretty much a go anywhere vehicle. I've recently retraced some of the old woods roads that my dad used, only this time in an '01 OB and the outcome was pretty much the same - A 1/2" of mud everywhere on the car and some pretty deep ruts in and back out again. The Eagle didn't have the finesse of the OB but it sure got the job done. And yes, it was the first Sport Utility Wagon.
The one thing I did remember was that the Eagle felt spindly and top heavy because of its "lifted" suspension. I'd keep that in mind when you are looking for ways to lift your vehicle. That last thing you'd want to lose is the solid, buttoned down feel that is a Subaru trademark. DT