You need a good horn
Christmas was good, my dear mum bought me a great present, a set of Fiamm airhorns, non-musical, just bloody loud. On the Vitesse there's a few places to mount these but I like to have them up out of the weather on the top of the front arch. These were a new kit from Fiamm (the design hasn't changed much over the years) and come with wiring and a relay. We wired them into the usual horn circuit and they are sounded from the steering wheel in a conventional way. I've had cars with musical air horns and I don't mind saying I liked them, but now I prefer a simple twin tone to La Cucaracha!