As far as i know, only one guy in Alaska named John has it on a GN from this site. He has 2500 lb bags mounted to 2 set of s-10 front air spring cups for F&R mounting, 4 valve set up and 2 switches (F&R only), and drop spindles to lay the nose way down. He did upgraded shocks but I don't recall what brand, and he is on 18" Eagle 212s and it looks cool.
I have a basic set up new in boxes I am selling if interested.