Wow, what a transformation, one day a GP bike, the next a streetfighter, gotta love the FZ.
For a mirror a bar end would work great. The good ole' Nepolean is only $19.95 or so.
When I was racing I made simple brackets with band aluminium. Simply find an ancor point, bend and or twist the band and then attach/bolt it to the speedo cluster.
On my RZ I pulled the tach dial out of the cluster and glued it into a 3.5 inch PVC pipe. Drilled holes in the pipe and mounted it up. I think it was all of $3.00 and worked great! I'm all about dirt simple and inexpensive for the track.
Have you had your track day yet Louis or is it this weekend?
BTW...I gotta the set backs last night, the look AWESOME! Hopefully this weekend I'll have time to fiddle with them.
Finally - You might want to check out my ConvertiBar install thread in the Mods section. It maybe something that will help you go between the track and the street.
Looks great Brother!