This 1999 Porsche 911 Carrera cabriolet was purchased by the current owner in July 2014, and it now has 18k miles. It is powered by a 3.4-liter M96 flat-six paired with a six-speed manual transaxle and is finished in Arctic Silver Metallic over Metropol Blue partial leather. Equipment includes a limited-slip differential, a blue soft top, a…