I think the main point is the Montero has excellent steering, and there is no need for one. I put one on because I had a problem. That problem ended up being rear trailing arm bushings. Other loose components can cause handling problems, but they need to be fixed. Steering stabilizers work for situations like Eddys FJ, or full size American trucks with big tires and ultra sensitive steering...

1996 SR From the Area 51 Skunk Works. 37"BFG Tires, 5" lift, Rock Track 4:1 Case, Tom Woods Drive Shafts, Oasis Air, Front ARB, lifted gas tank, T-max winch and lots of stuff that cost too much.