RUG-E3 Original equipment 4 speed top loader transmission from a 1969 Mercury Cougar with engine code H 351-2V, engine code M 351-4V, and engine code G Boss 302 Eliminator only. Transmission code 5 on the door tag, this would be a wide ratio 4 speed transmission with a 2.78 ratio first gear. Ford master part number C6ZZ-7003-F.