I am not sure if this has been posted so I thought I would share it with the community. Many have seen SOCOMOTO's videos on here or on Youtube. He recently did a set up for a GSXR front end on a 550 using the standard Harley 19" wheel. His method seems pretty straight forward and he is really easy to follow. The hard part is the machining.
Enjoy the video if it hasn't been posted before. Sorry if it has been posted...
http://youtu.be/lai8xINkAhs