March 20, 1971 Sebring, Florida, US 

The Penske/White Racing Ferrari 512M driven by Mark Donohue and David Hobbs tops up during the Sebring 12 Hours. Five 512s lined up on the grid, all fielded by independent teams. The only factory-entered Ferrari was a 312PB with Mario Andretti and Jacky Ickx at the wheel. No6 would be the highest-placed Ferrari finisher, in sixth