About the only info I can give is that I had one like the black and silver horn. It is an aftermarket, but sounded very good. I had it on my 34 ford tudor. Unless you plan on mounting it in plain view (tacky IMHO) this one would be a good choice. I mounted mine under the body on the chassis. It was plenty loud enough! Besides, it was just for effect, I dont think they are allowed to be used as a primary horn.