Here is the Black Falcon #9 car which took part in the Nordschleife 24h 2016 and was driven by Hubert Haupt, Yelmer Buurman, Maro Engel & Dirk Müller. This car is really not 100% accurate to real life. It is more of a mix from the picture that i have seen for this car.
In order to install the skin you have to go to your rfactor 2 folder is located and then go to user data >player >settings >Mercedes_AMG_GT3_2017.
Mercedes AMG GT3 - Nords 24h (2016) Black Falcon #9 v2
#9 Black Falcon Mercedes AMG GT3