I did retro-mod horns on my challenge cars… but I used these (idea taken from another challenge car owner and fellow fchatter): Image Unavailable, Please Login
Love it. It needs it. This one for earlier cars but bumper needs to come off. https://www.ricambiamerica.com/ferrari-air-horn-kit.html Details please. Please.
The retro horn on the older/classic Ferrari were made by Fiamm. This is what my dealer told me, so I ordered a Fiamm air horn kit and had the dealer install it. The air horn kit is not expensive, about 45.00CAD, the install at the dealer however is where the money went. Anyway, just a fun little mod that will not break the bank, nor void the warranty.
not sure why it won't let me post the name of the indie shop that did the work. i am not sure on details brand, number of horns, etc but if you google independent ferrari shop in Atlanta GA they did the work and can quote you specifics and pricing.