Pontiac is stepping up the performance of the G6 lineup with the addition of the GTP performance model. Powering the GTP is a 3.9-liter V6 producing 240 horsepower and 240 lb.-ft. of torque, driving the front wheels through a four-speed automatic with manual shift capability. Buyers can choose between coupe, convertible, or sedan body styles – but only the coupe offers an optional six-speed manual transmission. You can spot a G6 GTP by its upsized 18-inch wheels.