Installed the air system on a sheet of OSB and shoved it in the toolbox of my 04 GMC Sierra. Screwed the outlaw under the toolbox so the whole system is pretty much protected from the elements. Installation was a snap! (Had to cut away a few plastic ribs of the underside of the Delta toolbox to make the outlaw fit in the space between bed-liner and toolbox, but hit no further snags.) Sounding this bad boy, parked in the carport is painfully loud! .......What's that??? I think I'm deaf!
At last no more wimpy sound from my horn!