The ’66 Mustang’s data plate tells us:
Model year: 1966
Assembly plant: Dearborn, MI (Code F)
Body style: Coupe standard interior (Code 65A)
Engine: 289cid 2V 200hp V-8 (C code)
Exterior color: Arcadian Blue (code F)
Interior color: Blue with Blue trim (code 22)
Production date: 30 April, 1966 (Code 30D)
District sales office: Omaha, NE (code 54)
Rear axle ratio: 2.8:1 (Code 6)
Transmission: C4 Automatic (Code 6)