For the first time, Porsche puts its unique Targa roof system atop a 911 platform that features both the eye-pleasing, wide-body look and dynamic all-wheel drive powertrain with the 2008 911 Targa 4 and Targa 4S. The Targa’s roof comprises two glass panels that provide occupants with a truly panoramic view even when the top is fully closed. For a more open-air experience, the front section of the roof opens like a huge sunroof. Engine choices vary from 325 to 355 horsepower.