The 2013 Porsche Cayenne GTS is based on the Cayenne S, with which it shares a naturally-aspirated V-8 engine. However, peak output has been lifted by 20 horsepower to 420 horsepower. The new model makes its official world debut this month at the 2012 Beijing Auto Show before hitting showrooms in August as a 2013 model. Pricing is set at $83,025 including destination.