The SDKIT17-734STL is the solution for Super Duty owners who have lifted their truck and are running oversize tires, installed an aftermarket bumper or added a behind the bumper winch. The horns mount on a custom designed bracket that bolts where the factory spare tire would normally be located. The kit includes the Demon Model 730 Steel Triple Train Horns, a heavy duty 100% duty cycle waterproof air compressor, 3-gallon air tank and every part needed for simple, bolt-on installation on Ford Super Duty trucks.