should get the F3 spacers, but the axle is the same I think, I know the bearing sizes are the same so it should interchange directly. just get the F3 spacers and I think the rotor bolts right up, and you're good to go.

 

i have found out that the 900rr rim will work jus have to make spacers

 

FYI.........A F3 rim only makes the F2 unstable in the turns. You are better of staying with stock.