The body structure of the 2008-2010 Porsche 911 GT2 (aka Porsche 997) has some major reinforcements in the roof rails, just look at the green running from the top of the A-Pillar to the C-Pillar. The monocoque structure, lightweight, hot-galvanized all-steel body shell with the front lid and doors made of aluminum. Just in case you were wondering what a monocoque structure is; it is a construction technique that supports structural load by using an object’s exterior. In a vehicles the sheet metal skin supports the interior structure. In others words, it just a fancy word for a Uni-body vehicle.