I found this but no know more ?
Craig's friend Dave Rittenhouse built this bike at Craig's shop. This started as a 750cc six cylinder, but was bored to 900cc. It had a lightened crank, Kei'hin smoothbore carbs and was a street bike! Notice the Hossack/Fior style front end, and the triangulation in the frame. The motor looks low, but was significantly narrower than stock and had plenty of lean available. 116K jpeg file