Another vote for Tork Lift Stable Loads.
I installed the Tork Lift Quick Disconnect Stable Loads just prior to our last trek. Traveled down to Reno and then through northern California and eastern Oregon. Lots of wind and all kinds of road conditions. The Stable Loads with all three shims in place really firmed up the rear end and very nicely augmented the suspension for almost no sign of sway or roll. Suspension consists of Timbren Suspension System, Ford stock sway bar and Rancho 9000XL shocks and now with the Stable Loads. I am very pleased with this set up. I also had my Enclosed Harley Hauler Trailer along behind on this 2000 plus mile trip.
GARY and LAURII