Your right a 1000 in a 600 frame is a another story and it's fun as hell. Id do it all over again. A turbo bike is not for the street at all. over heating at every other stop light, and the gas you use is like a car. The biggest thing is the cost not cheap at all. I paid alot less for my motor and the install, and the fact that its streetable is a plus. Send me a pm if anyone would like more info on a 1000 into a 600 frame.