I have a Ram 3500 Crew Cab 4x4 Dually and a Artic Fox 992. I added bags to level the truck, and what was another plus was that it rides much nicer loaded. I could live without a sway bar, but I plan on one shortly. I think it'll help to improve the ride even more with controlling the sway. We just returned from a fishing trip up to Coos Bay and towed our 24' Skipjack boat up and back on this trip. 550 miles each way traveling I-5 northern Ca/Ore. threw the mountains and onto Ore. state route 42 west to Coos. I experienced more sway at freeway speeds on the curvey grades of I-5 then the slower speeds on the 2 lane 42 west to the coast. I know its about the g force/speed and what not, but I feel that for me the improved handling on a Hwy and all around there is a real benefit with a heavy duty sway bar. If you add a after market bar, get one that works with airbag suspensions incase you have/want to add those later. I was looking at some and not all where compatible,,,gregg