Anyone do any offroading with the airbag system? I've noticed that behind the bag the bracket hangs fairly low, not to mention that it does add some length to the leaf spring system. Putting the rear most part of the airbag farther back and hanging farther down than a straight leaf spring system.

 

As good as airbags are I wouldn't run them on a truck that sees a lot of off road use. The 63" Chevy rear spring swap would be better IMHO.
https://www.dieseltruckresource.com/...nished-280565/

Jungle over at RCC makes some really nice spring hangers for that swap.