4-litre front-engined prototypes run by privateer teams. While Ferrari stalwart Pierre Noblet ran a works-supported entry, the North American Racing Team (NART) ran another (for Dan Gurney and Jim Hall) as well as the 330 TRI/LM, for Pedro Rodriguez and Roger Penske, that had won the race the previous year. There was also a new British team – Ronnie Hoare's Maranello Concessionaires entered a 330 LMB for Jack Sears and Mike Salmon. Four manufacturers lined up against the big Ferrari prototypes: Aston Martin, Maserati, Lister and Lola. John Wyer had convinced the ACO to accept the Aston Martin DP214 prototypes as GT-derivatives of the DB4 cars. The successor DP215 had a new 4.0-litre engine capable of 323 bhp. It was driven by Phil Hill and Lucien Bianchi. Maserati returned with an updated Tipo 151 coupé for their French agency. Lightened and now fitted with a fuel-injected 5-litre V8 engine, it was the biggest car in the field and produced an impressive 430 bhp capable of 290 kp/h (180 mph). It would be raced by French veteran André Simon and Lloyd ‘Lucky’ Casner (owner of the American Camoradi team racing Maserati cars). For their second foray into Le Mans, Lola rushed their revolutionary Mk6 GT prototype. The Eric Broadley / Tony Southgate design had a steel monocoque chassis with fibreglass body and intricate suspension design. Initially fitted with a mid-mounted Ford 4.2-litre Indycar engine generated 350 bhp, it was subsequently uprated to the 4.7 litre Ford engine. The car was so light that it needed ballast to reach its 875 kg minimum weight. However it was undergeared and could only reach a maximum 240 kp/h (150 mph). The car would be raced by David Hobbs and debutante Richard Attwood Porsche (now entered as Porsche System Engineering, a Swiss-registered entity for the works team) had the 2-litre class to itself. They arrived with a pair of developed 718-series cars that had won the Targa Florio when the Ferrari s had failed. One a coupé (for ‘Jo’ Bonnier/Tony Maggs), the other a spyder (for Edgar Barth/Herbert Linge), they used the new 2-litre flat-8 Formula 1 engine. Once again the smaller-engined classes were strongly contested. Charles Deutsch (last year's victor), after the withdrawal of Panhard's engines, signed a deal with German manufacturer Auto Union-DKW. The 750cc three-cylinder, two-stroke engine could develop 80 bhp and with the streamlined body, could reach 225 kp/h (140 mph).