350gunner

I'd like to get one of those ultra loud air horns. Just curious if anyone has installed one. I'm having a hard time finding a place to locate the horn assembly so it points forward.

Neurobit

Hmm... Used to have this on my Super Duty a few years back. Doubt you'll be able to find a spot.
If it's a true big rig air horn, you will have a compressor, pancake air reservoir, and also the 16-17" horns themselves. Not sure where you'd be able to put all that.

Neurobit

Count Laszlo

Haha, that's awesome... Who you want to honk (scare to death?)

If you're not looking for a big air horn, you can always try installing one of those euro-horns, ones found in older Porsches and Ferraris, which are more compact and still pretty loud. They also sound cool.