This 2004 Porsche Boxster S is #313 of 1,953 examples produced to commemorate the 50th anniversary of Porsche's 550 Spyder. The car is powered by a 3.2-liter flat-six paired with a six-speed manual transaxle and is finished in GT Silver Metallic over Cocoa leather. Equipment includes a power-operated Cocoa soft top, sport bucket seats, 18″…