what vehicles have LOUD horns?

[grundens]

I want to pick up some nice and loud horns off a junk yard vehicle , whos got any suggestions? its goota sound normal not like some fo those queer horns! just cruising down the highway at 55mph in 5th passing and tooting at my bud whos on the inside lane w/ the cut out open.. I couldn't really hear horn but thought for sure my buddy could hear it but no dice. admittedly I mainly use my throttle in most cases wher my horn is required but I'd like to get a loud enough thorn for my buds to hear me when I toot at them passing.. or in situations where revving my engine doesn't suffice to make oblivious people pay attention. and I dont want the massive big horns, just something off another car thats loud enough to overpower my exhaust