From 1964 to 1978, a series of flat-bottomed formula cars were manufactured to serve as steppingstones to Formula One and the upper echelons of open-wheel racing. In the late ’50s, F2 and F3 were consolidated into Formula Junior. However, with that category’s demise at the end of 1963, F2 was reformed, utilizing highly developed 1,000-cc, fuel-injected engines until 1966. From 1967 to 1971, racecars manufactured for F2 were equipped with a more powerful gear-driven Cosworth FVA engine, while in the…