K20-140-160 STERN DRIVE - 160 1967-1969 888 STERN DRIVE (1.50) RATIO - 888 1971-1977 II STERN DRIVE - II 1964-1967 1A-1B-1C STERN DRIVES - IA/IB/IC 1964 K20-140-160 STERN DRIVE - 120/140 1967-1969 120/140/165 STERN DRIVE - 165 1970-1977 1A-1B-1C (E-Z SHIFT) - IA/IB/IC (EZ-SHIFT) 1965-1966 II STERN DRIVE (1.78:1 GEAR RATIO) - II (1.78:1) 1968-1969 120/140/165 STERN DRIVE - 120/140 1970-1977 120/140/165 STERN DRIVE - 120/140 1970-1977