Earlier this month at the North American International Auto Show, Multimedia Editor Chris Amos got a chance to get up close and personal with Mercedes-AMG’s new Porsche 911 fighter, the GT. Seen here in the uprated “S” trim, the GT S boasts 503 horsepower and 479 lb-ft of torque from its brand new “M178” engine, a 4.0-liter, biturbocharged and dry-sump lubricated V8, which sends power to the rear wheels by way of a seven-speed dual clutch transmission and an electronically controlled limited slip differential.