Ford Mustang 289 Hi Po
If there was one thing about the muscle car era it was the rarely-ending plethora of trim packages offered. Even the Mustang had a trim package for every taste, from the budget-minded consumer to the performance-hungry one. The Ford Mustang 289 Hi Po utilized a special engine called the “K-Code” (via Motor Trend).
This engine was introduced due to the negative press regarding the Mustang’s lackluster performance. The 289 Hi Po was the friendliest option for those who wanted performance without sacrificing economy.