The CB900C is a shaft drive 10 speed... I was hoping for something more specific... I'll take a look tho... I was thinking of doing the swing arm end of the shock mounting similar to some of the CX500 monoshocks I've seen. Maybe the top end, where it mounts on the frame, like the 750... To further complicate matters I also want to cut off the entire portion of the frame under the seat and put in a long straight hoop. Perhaps I can give triangulation and support to this at the same time with the upper shock mount...