Daytona Int’l. Speedway, Daytona Beach, FLJanuary 28, 2017 The winner of Daytona’s 1973 Rolex 24 was this Brumos Porsche 911 RSR driven by Peter Gregg and Hurley Haywood.Photo: Martin Spetz Nissan GTP evoked a landmark era for North American prototype racing.Photo: Martin Spetz A Lancia Beta Montecarlo and a Group 44 Triumph TR8 prepare to head out for a lapping session.Photo: Martin Spetz A pair of Chevrolet Intrepids bracket a Nissan GTP-ZX Turbo on the banking.Photo: Martin Spetz