[5th_bike]

Well I heard of a system that is actually for little cars, it involves some electronics and a honkin' subwoofer, hook it up to your ignition and battery, then select "Lamborghini", "Ferrari", "Corvette", "Porsche" etc. at the little box, and the sounds will come thundering out.

I don't know if they make them for motorcycles with "Ducati", "Moto Guzzi", "Indian" etc. :??:
If ever, don't count on a "Harley" selection because they patented their sound.