Steve Lisa's Ford Galaxie and Brian Garcia's Plymouth Barracuda
Brian Morrison's Chevy Corvette
Rick Parsons' Lola T-332C
Dave Handy's Shadow DN6
Bruce Leeson's McLaren M10B
Jeffrey Green's Lola T-300
George Bruggenthies' Surtees TS-8 and Jim Stengel's McRae GM-1
George Frey's McLaren M10A leads Paul Dudiak's McKee Mk. 12C and Gregory Thornton's Lotus 77
Mark Harmer's Surtees TS-5
Ethan Shippert's Brabham BT44 and George Bruggenthies' Surtees TS-8
George Bruggenthies' Surtees TS-8
James King's March 761
Barry Blackmore's Lola T-332 and Marc Rauchfuss' Lola T-332
James Hagan's Tyrrell 011
