I believe the subframe is wider and a bit different size then 06/07. I tried putting his seat on my bike and it was too wide..I've thought about doing this as well. I want to try it. I belive if you changed out the headlight, air intakes, fairing stay, all plastics that it should work. I don't know why you'd have to change out the subframe. The rear on the 06/07 is pretty dang close to the 08/09.