Sport Chrono Package Turbo, AWD, Aluminum/Leather Tiptronic S Handbrake Lever, and Navigation System. Go topless! Convertible! Enjoy the warm weather riding around with the top down in this superb-looking and fun 2008 Porsche 911 convertible. So go ahead and feel free to flex your muscle in this 911. It will go from 0-60 in just about the same time it'll take you to catch your breath.