Look into timber groove ASM bags. I put a pair on my 1500 that has a 6" BDS lift with 5" rear coils. The kit is very nice, the fit and finish is great, 100% bolt on and you can do it in your driveway with basic hand tools. The owner is very responsive and super quick in answering emails.
The ride is a bit firmer, but still super comfortable. I can load my truck up to overflowing with camping gear and it'll handle moderate off-road trails with ease. When towing my side by side, the bags are a huge improvement in stability and it takes out all the rear sag.
The airlift 1000 bags and these bags work on 2 very different principles. The airlift 1000s are coil "helpers", meaning they'll inflate inside of the coil spring, filling the voids in between the spring coils making it harder to compress. You have to inflate them before adding any weight.
The ASM bags are actual airbags that will take the weight of whatever it is you're carrying. Load your truck then add air to take the squat out of your truck.
This pic is with the airbags fully inflated per instructions, to check air line clearances and ensure there is no leaking. The lines are routed to a valve stem that is mounted through one of the license plate mounting holes.
