The historians on this site might be interested in the photos below. They are from a mid 70's 2 door rangie that a friend owns. It was originally built as a prototype for Land Rover incorporating a 3 speed auto and this supercharger. Land Rover later went with fitting the auto to production cars, but sadly the supercharger was not. The supercharger is a switchable one. That is, it does not run all the time if your don't want it. It has a clutch on the front similar to a air-con unit.