I put the Wolo Bad Boy from HFT on my bounder in place of the factory GM horns. Loud enough but lacked depth. Rewired the Bad Boy with a relay and reconnected the OEM horn. With both horns the sound is deeper and loud enough that some of the idiots that enter freeways without speeding up or letting cars doing freeway speed pass, do take notice.
I have recorded the reaction of some of those jerks that are busily talking to a passenger or their non- hands free devices, they can be funny. Seeing a passenger's head whip around so hard he probably got whiplash and the back end of the car drop dramatically as the driver floored the accelerator when he saw me 10 feet away was priceless.
The DW doesn't believe in honking for many things but when she is doing her best at defensive driving and folks just keep doing stupid things like talking with their hand held devices or texting and they make her lock up her brakes, she loves the horn.