Clayton, I’m not sure if this will be helpful because I have a Silverado LTZ 3500 SRW standard bed with the 8-11 LE, but FWIW, Kieth at NL said the hot setup they recommended is upper Stableloads with air bags. And of course not just the air bags because as you probably know, if you level your rig with them then your overloads probably won’t be engaged which would not be good. With my camper on, my bump stops were well down on the overloads (which was actually a bit of a surprise). So it made sense to me to try just the upper Stableloads first and hope for the best. I just had them installed and should be picking the rig up within a few days, and am hoping that I get enough lift in the back to be able to forgo air bags, we’ll see. If not, I guess I’ll bite the bullet (again) and add the air bags.
Again, I know we have different trucks and campers, but I think the Stableload/air bag approach to both is reasonable.
HTH.