X2 for airbags. I know you said no airbags, but it helps me in this situation, so thought I would chime in. Airbags work good for raising the truck a couple of inches as long as you keep the overloads still engaged. Once you put too much air in them, for me over 20PSI, it starts getting tippy.
Once my camper is unloaded, I turn them down to 5-10 psi for a stock again ride. I also can add a little more air when i'm towing my boat to get me level, opposed to just the camper. Also nice for leveling one side or the other when camping with the truck in the bed of the truck. I recently camped and added 65 psi to one side-5 psi the other and was level for 2 days.
Good luck and report back with results of your final decision.