McLaren traced its road car origins back to 1969–1970, when Trojan Ltd of Croydon, Surrey, built the M6 GT racer for the McLaren organization. Homologation problems prevented the car from racing, so Trojan produced road-going versions instead, one for Bill Bradley and another for Bruce McLaren himself. These cars were close to pure racers, fitted with Bartz-tuned Chevrolet 5.0-litre V8 engines, unequal-length wishbone suspension, and lightweight glassfibre bodywork standing just…