10-12-15, 06:00 PM
The stems will need to be swapped... Local engineer job. I doubt the average person will be able to do it. You may need spacers as well. I only used an R1 on my FZS because as you said I got them cheap but even they are not a straight swap and require the stems swapping and a spacer under the top yoke.
Owner of Motorcycle Republic, Specialist in unfucking things that others have fucked up.