Depends on your budget but its not to hard check ebay cycle salvage yards for parts, you need the master cylinder, spindles, disc and brake lines to do this, you do not need the a-arms as they are the same. Me an 01blaster_freak basically just did this to mine. I had a bent 04 frame and replaced frame with an older frame, We used all my 04 stuff and it bolted right on. Now if I could get a bracket for the rear master cylinder and brake pedal, I would have my back brakes hydro as well. Your project should not take more than a couple hours once you get the parts. If you have the money you could get new parts from Yamaha as well.