FWIW I fitted the redundant OE matched twin tone horns from my Roadster to my old Land Rover. Surprised at the improvement giving the impression of a much larger vehicle over the puny single horn previously fitted.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone