Ford Mustang 289 HiPo
Most of the market was fascinated when they first saw the Mustang in 1964. They saw compact, sporty looks and a very affordable price, which seemed unreal. But there was a small portion of knowledgeable car enthusiasts who were disappointed. The reasons were the technology and engine choices. The Mustang shared modest underpinnings with the economy Falcon. Its engine lineup included pretty mild versions of inline-six and small V8 units. The power output was nothing special and the performance was below expectations (via Motor Trend).
Ford responded by hiring Carroll Shelby and producing an almost race-ready GT 350 in 1965. But for those who could not live with a screaming 306 HP 289 V8 engine in the GT 350, Ford prepared an interesting engine called K-Code. The K-Code was the 289 V8 but with a milder, more street-friendly tune and 271 HP, which was more than enough for the decent performance Mustang fans asked for. With an optional GT package with a stiffer suspension, better equipment, and lots of exterior details, 289 HiPo (High Power) was the choice of many car fanatics. Introduced in 1965 and available until 1967, the 289 HiPo was the first Mustang that ran as well as it looked. Especially if you ordered it in a gorgeous Fastback body style.