Oil pan. Oil pump. Aerostar; Exhaust. Aerostar; Intake. Aerostar; Left Side. Aerostar; Lower; Center. Aerostar; Lower; No.1. Aerostar; No. 1. Aerostar; Right Side. Aerostar; Upper; Center. Aerostar; Upper; No.1. Aerostar; Upper; No.2. W/O valves; Aerostar; After 7/15/86. W/O valves; Aerostar; Before 7/15/86. W/VALVES & cam; Aerostar; After 7/15/86. W/VALVES & cam; Aerostar; Before 7/15/86.