With all the discussion about how the 3rd gens look better then the 4th. IMO its only the fairing that looks better on the 3rd gen. Which leads to the obvious question, are they interchangeble?
any thing can be done. I have seen the Honda SP1 & 2 body work made to fit 5th gens ( RC-51) as well as CBR fairings. just a matter of what you feel you can do.