Table:
text: March Grand Prix results
Complete World Championship Formula One results
Complete World Championship Formula One results
Year_ Chassis Engines Tyres Points
1970 March 701 Ford Cosworth DFV F 48*
1971 March 711 March 701 Alfa Romeo 3.0 V8 Ford Cosworth DFV F 33 (34)*
1972 March 721 March 721X March 721G Ford Cosworth DFV G 15*
1973 March 721G March 731 Ford Cosworth DFV G 14*
1974 March 741 Ford Cosworth DFV G 6
1975 March 751 March 741 Ford Cosworth DFV G 7.5*
1976 March 761 Ford Cosworth DFV G 19*
1977 March 761 B March 771 Ford Cosworth DFV G 0
1981 March 811 Ford Cosworth DFV M A 0
1982 March 821 Ford Cosworth DFV A P 0

Question: Engine(s) with f tires in March Grand Prix result 1971 ?