Honda produced two SOHC/4 police bike variants, the CB750P and the CB550P.
CB750P This brochure, featured on the Northern Territory Police Museum site is for a later model bike.
The BikeBros features these detailed photos of a 1970 Japanese CB750P.
The SOHC/4 Forums Performance and Racing board is a great resource for anyone interested in racing a single overhead cam four.
SOHC/4 Racing and Performance Articles Racing “Mann Makes it at Daytona”, Motorcyclist Magazine, June 1970