Getting the factory overload springs to engage sooner and more fully certainly does help reduce body roll in any brand/model truck when carrying a camper. StableLoads accomplish that task and are easy to install.
Other things you can do that don't cost much are-
-Inflate the tires to their max anytime the camper is on the truck.
-Upgrade to E rated tires next time you change tires, if your current tires are D's.
-Change out all the factory rubber front end suspension bushings for polyurethane bushings from Energy Suspension or Prothane. It doesn't cost much and makes a big difference on any truck.
-Add a leaf to your overload springs, which stiffens up the overloads and raises the loaded ride height a bit, reducing sag and restoring proper steering and front end suspension geometry. Doesn't affect the unloaded ride, since the overloads don't engage when the truck is not loaded.
-Upgrade your shocks to Bilstein, KYB Monomax, Rancho 9000 adjustable, or whatever is your favorite heavy duty shock brand/model.