You MIGHT be able to swap bearing to fit the GSXR axle, then make custom spacers to line it all up.
Or you'll have to make a custom axle, then make custom spacers to line it all up.
Or you might be able to machine the hub to take GSXR axle friendly bearings, then machine custom spacers to line it all up.
Or...
This can go on forever.
Bust out the pencil and paper and figure it out. Plenty of how to stuff online to use as reference.