1985 Ford Mustang Engine: 5.0L V8; w/Standard Duty Cooling; w/Air Conditioning; Trans: Manual;. 1986 Ford Mustang Engine: 5.0L V8; w/Standard Duty Cooling; w/Air Conditioning;. 1987 Ford Mustang Engine: 5.0L V8; w/Standard Duty Cooling; w/Air Conditioning;.