Originally Posted by Robbie T
We often fit train horns to trucks at my work
I'd heard of that being done as a one-off. Why do you say "often"? Sounds like a common and perhaps legal mod? Which suggests that either the original truck horns were crap (like scoobs), and/or that it's no big deal?
Need air compressors, don't they? So fitting one to a car would be a pig...