This 2007 Porsche 911 Carrera 4S cabriolet is powered by a 3.8-liter flat-six that drives all four wheels through a five-speed automatic transaxle and is finished in Slate Grey Metallic over Cocoa Natural leather. Equipment includes the Sport Chrono, Bose High-End Sound, and Power Seat packages as well as 19″ Carrera Classic wheels, a Cocoa…