[ edit ] Mustang II - Mach 1 package Second generation Production 1974–1978 Body style 2-door  coupe Engine 2.8L  V6 302 cu in (4.9 L)  V8 Transmission 4-speed  manual The Mach 1 was the performance package, fitted with the 2.8 L  V6  rated at 105 hp (78 kW). The 1974 Mach 1s outsold the previous 4