1964 marked the last of Porsche's "giant killer" flat-four racing cars with the fiberglass-bodied 904 GTS. The 904 would go on to be a success in sports car endurance racing, scoring multiple class and overall victories, even against a certain Italian manufacturer with much larger displacement engines. This 1964 904 GTS was originally sold to Steve Earle, the founder of the Monterey Historic Races at Laguna Seca. The passed through another owner who raced the car, then was offered up for sale in 1966. Another Californian bought the car — actor Robert Redford, who owned it for another ten years. After Redford sold the car, it was upgraded to an early 2-liter flat-six from a 911 — something Porsche did itself in the last 904s produced. The car, being offered by Bonhams, arrives with a copious amount of documentation and its original bodywork, chassis, and transaxle. The original motor is thought to be out there somewhere, making this 904 a great example of the last of the small-displacement Porsche race cars.
Photos: P. Litwinski / Bonhams