For those of you who have trucks that did not come from the factory with air horns, or air brakes for that matter, how have you added air horns, if you have? What size compressor and/or tank did you use? We're looking at a set of used Grovers then we'll setup an air supply. And while we're on the topic of air horns, any of ya'll tried or used the air horn kits like JC Whitney sales?
Any help is GREATLY appreciated!