I had only a little sway until I added airbags to level the load. Found that too much air in the airbags made the body roll worse. I found 35# left and 60# in the right leveled it with very little roll.
It still felt uncomfortable when exiting an interstate off ramp loop.
I added Energy Suspension bumper to the springs which raised the rear back up a bit without increasing sway. They work great at getting headlights back where they should be and are much (much) cheaper than stableloads but didn't stop the body roll on an exit ramp.
Added rancho shocks which felt no different than factory shocks. Waisted money.
Finally added a Helwig roll bar. That put it back in the comfort zone for me. Very solid now, even with roll bar in the least tension position.
I put on heavy load range tires also, but that didn't seam to make any difference in how the driving felt. It did help with peace of mind in carrying the load.
If I needed to "adjust" a truck for roll again, I would do the roll bar first, energy suspension bumper second, airbags third.
