Dallara Lola Cars Mygale March Engineering Kurtis Kraft Cooper Car Company Cosworth Judd Offenhauser Coventry Climax Advanced Engine Research 
Cooper Car Company Dallara Kurtis Kraft Lola Cars March Engineering Mygale Advanced Engine Research Cosworth Coventry Climax Judd Offenhauser
R
Dallara Lola Cars Mygale March Engineering Kurtis Kraft Cooper Car Company
Cooper Car Company Dallara Kurtis Kraft Lola Cars March Engineering Mygale
D
Cosworth Judd Offenhauser Coventry Climax
A
Cosworth Coventry Climax Judd Offenhauser