Back in the old days, the classic Skyjacker or Gabriel air shocks were the only way to keep your fenders from rubbing after you put too large of tires and mag wheels on your hot rod... As a band-aid, they got the job done, but as a permanent fix, they frankly, sucked.
On the other hand, I've used Air-lift bags on 2 different trucks, with cabover campers on them, and on my current Toyota mini van. On one instal, the Nissan Hardbody-turned-1-ton-dually, back in 1991, I had to modify the brackets, heat with torch and bend, to suit. The other instals went smoothly. All of them performed flawlessly.
Just a thought: You can plumb them two ways, tee'ed together (one common schraider fill valve) or on their own individual fill valve. For better sway control, individually is the way to go, for better off road flex, teeing them together would be better.