The Rennsport Reunion IV officially marks the unveiling of the 2012 Porsche 911 S making its North American debut. On display? Two upgraded 911 S models, fitted with 3.8-liter flat-six engines that produce 400 horsepower and 325 pound-feet of torque. What else do you need to know? A seven-speed manual is standard in both rear-wheel-drive models, with Porsche's seven-speed PDK automated gearbox optional.
Were you lucky enough to see the new 2012 Porsche…