Chevron B21
The Chevron B21 is a 2-liter Group 5 sports prototype race car, designed, developed and built by British manufacturer Chevron, in 1972. Over its racing career, spanning 13 years, it won a total of 23 races, scored 45 podium finishes, and clinched 11 pole positions. It was powered by a naturally-aspirated Ford-Cosworth BDG, or BMW M12/7, four-cylinder engine, both making around. Only 28 cars were built.