Several changes to the Mustang occurred at the start of the normal 1965 model year production, five months after its introduction. These cars are known as “late 65’s,” and were built after factory retooling in August 1964. The engine lineup was changed, with a 200 cu in (3.3 L) “T-code” engine that produced 120 hp (89 kW; 122 PS). Production of the “F-code” 260 cu in (4.3 L) engine ceased when the 1964 model year ended. It was replaced with a new 200 hp (150 kW) “C-code” 289 cu in (4.7 L) engine with a two-barrel carburetor as the base V8. An “A-code” 225 hp (168 kW; 228 PS) four-barrel carbureted version was next in line, followed by the unchanged “Hi-Po” “K-code” 271 hp (202 kW; 275 PS) 289. The Ford Mustang Fastback is an excellent example of the classic American muscle car, which benefits from a more powerful engine, and a recent cosmetic overhaul to produce a truly bespoke classic. It presents in superb condition throughout, and would make an eye-catching weekend cruiser.