I just ran my lines through the box into the bed to the tank on my Dodge. On my ford I ran them from the compressors under the truck into the bed to the tank, then back through the bed to the horns. The airbags just ran up from the bags down the frame to the back bumper. Obviously using rubber grommets where the lines passed through metal. Next lines will be stainless braided.
Garrett
probably getting paid at work to post this from my bionic