Which one would you pick? A 1983 gsx 1100, or a Ducati 1991 900ss. I already have the gsx, but MAY be able to swap it for the duke with maybe a cash difference. The manufactures specs say that the gsx taps out at 222km/h, with 110 h/p, and the duke at 213 with 93 h/p. I dont know a lot about bikes i just ride them, leaving the fixing part to the experts. At the moment i use the gsx for weekend cruzing, the ocasional sprint, and hillclimb so i know what its capable ...