March 75A
The March 75A was an open-wheel formula racing car, designed, developed and built by British manufacturer and constructor, March Engineering, for Formula 5000 racing, in 1975. It was based on the March 761 Formula One car. Unlike most other F5000 cars of the time, which used V8 engines, the 75A used a smaller Ford-Cosworth GAA V6 engine, which produced between @ 9,000 rpm, depending on tuning and spec. Engines up to could be used, so this was still perfectly in line with the regulations.