Slip a big V-8 engine in to a compact coupe and you have the makings of an awesome sports coupe.? When the engine is the Mercedes-Benz AMG 6.3-liter V-8 and the car is the C-Class coupe the edge becomes even sharper and the car becomes world class. At 510 horsepower, the 2012 Mercedes-Benz C63 AMG…