Hardcore Mercedes-AMG C 63 Coupe spotted testing

Merc set to take aim at the BMW M4 GTS with its new Mercedes-AMG C 63 'R' coupe, and we've spotted it at the Nurburgring 2016-10-07 16:15 Mercedes-AMG appears to be working on an even faster and more hardcore version of the C63 coupe. Spied completely undisguised at the Nurburgring the test mule sports some rather obvious additions such as the huge rear wing, indicting that this could be Merc’s answer to the BMW M4 GTS.
The changes that can be picked out on the prototype all focus on aero