Well, we put our fifth wheel into indoor storage yesterday for the winter. It was an extremely tight fit so there was a lot of slow speed maneuvering, tight turns, and back and forth to get the trailer into it's spot. The 2 Low kit worked great, it reduced the clutch effort dramatically and made the job much easier on the truck and myself. It also makes backing into such a tight space safer because of the much slower speeds encountered when releasing the clutch.
Overall I would rate this as being one of the best modifications I've done to any of my trucks!