Rhino Rack makes some solid products, I've been very satisfied with the rails and cross bars I'm using on the Gen. 3.
Are you replacing the factory cross bars? I would highly recommend it if you are not eliminating them and attaching directly to the roof rails.
After over ten years of abuse the factory roof rails on the Gen.III Montero started to show signs of failure. The rails between the roof mounting points were loose. After some research, I decided on a system from Rhino-Rack. The Montero specific system includes new tracks that mount into the...
www.expeditionportal.com
Cheers