or you can buy some "hella" dual tone horns, etc, from autozone for 30-40 dollars, I believe.
Dixie air horns FTW! all the rednecks at my school have them.
it has to be a "horn" brand, and an "any size", size.
the EASIEST way is to remove your stock horn and take it with you, simply to make sure the connections are the right shape/size.. other than connections, horns are pretty much universal.
haha! i was gonna post about horn blasters! the only problem is that you need a HUUUUUGE compressor in the back
Nezer... someone must have switched out your horn then! Mine sounded like it belonged in a Geo Metro.... and was so embarrassing that I never used it.