Hi ...
Early R1 gear change lever won't fit a Fazer 1000 which is a shame as it's a better design, upper shift arm will fit giving a shorter lever throw.
Fazer 1000 lever shift throw is on the long side, had one in the garage a few yrs, fitted it now & seams to improve gear selection a bit.
Shift rod needed a slight "S" bend to clear the frame rail it runs thru, I just set lever height where I wanted it, measured it from the floor while on centre stand, marked where top of rod is with a sharpie, took rod off again & put as a slight "S" bend in it & refitted.
Yamaha gear boxes aren't in the same class as Honda, very clunky/agricultural shifting from my experience, never owned a new Yamaha only used, so could be down to rough use from previous owners.
Link rod will foul the frame a bit, so will need persuading a bit.
Rarely see em for sale used & new price is crazy expensive.