For 1969 Mercury Cougars and Ford Mustangs with the 351W engine. Also 1970 Mercury Cougars and Ford Mustangs with the 351W or 428CJ engine. This is a Pitts manufactured pulley and clutch assembly with a pulley diameter of 6-3/8", a clutch diameter of 5-3/16", and an overall thickness of 1-11/16 inches. Whew, say that 5 times fast!
Ford part # C9AA-2981-D.