Table:
text: 1971 World Championship Victory Race
Results
Results
Driver Entrant Constructor_ Time_Retired Grid
Guy Edwards J.T. Butterworth McLaren - Chevrolet 12 laps 26
Jackie Oliver Bruce McLaren Motor Racing McLaren - Cosworth Brakes 9
Trevor Taylor Malaya Garages Leda - Chevrolet Overheating 23
Howden Ganley Yardley-BRM BRM Engine 8
Mike Hailwood Team Surtees Surtees - Cosworth Suspension (collision) 5
Fred Saunders Fred Saunders Crosslé - Rover Engine fire 27
Henri Pescarolo Frank Williams Racing Cars March - Cosworth Collision 15
Reine Wisell Sid Taylor McLaren - Chevrolet Collision 18

text: 1971 World Championship Victory Race
Results
Results
Driver Entrant Constructor_ Time_Retired Grid
Alan Rollinson Alan Rollinson Surtees - Chevrolet + 56.4 s 17
Frank Gardner Motor Racing Research Lola - Chevrolet + 56.6 s 14
Mike Walker Doug Hardwick Lola - Chevrolet + 58.0 s 16
Gordon Spice Gordon Spice McLaren - Chevrolet + 1:10.2 s 20
Teddy Pilette Racing Team VDS McLaren - Chevrolet + 1:11.4 s 22
Keith Holland Keith Holland McLaren - Chevrolet + 1:12.2 s 19
Ronnie Peterson STP March March - Cosworth + 1:15.8 s 4
Ray Allen Team Trojan McLaren - Chevrolet 13 laps 21
Ian Ashley Kaye Griffiths Lola - Chevrolet 13 laps 24
David Prophet David Prophet Racing McLaren - Chevrolet 13 laps 25

Question: Which constructor has fewer than 21 grids and one engine in the 1971 World Championship Victory Race?