Built one up for you (by the way it was the normal 2010 C63 AMG and not the black series 2012 wasn't it?)
Tried this in A, S and R3 and by far the best class for this car is A class running on speed tracks
You can get it all the way up to over 1000hp with over a 1000lb of torque in R3 but it will only go to R750 odd and is nigh on useless other than going in a straight line (great fun though and sounds amazing with the V12 twin turbo engine swap from the SL65)
I tuned it on catalunya (for grip) and Indianapolis GP (for speed) to get a base general build that can be used on most tracks.
Not sure what assists you run with but i had everything off except traction control and used manual with clutch. It will run just as quick with TC turned off but you will need a certain amount of throttle control coming out of the corners, mashing the throttle will spin you out and have you doing doughnuts all day long!!
On most tracks you only need 3rd, 4th and 5th gear, if you use 2nd be careful when switching down.
It's no LB car but some times i managed:
Catalunya GP - 1:58:732
Indi GP - 1:30:822
Anyway, have fun and feel free to change whatever you like
Stats
Speed - 7.5
Handling - 6.0
Acceleration - 8.2
Launch -7.8
Braking - 6.5
Build A600 - If it's not listed it's stock
Aero
Forza front bumper
Forza rear wing
Tyres
Race compound
Max width front and rear
Rims
FIKSE FM/10
Drivetrain
Street driveline
Race diff
Platform and handling
Race brakes
Race springs
Race ARB's front and rear
Sport weight reduction
Enigne and power
Race air filter
Sport intake
Race pistons
Tune
Tyres
29.0/30.0
Gearing
N/A
Camber
-1.2/-0.9
Toe
0.1/0.0
Caster
6.8
Anti-roll bars
25.20/17.00
Springs
742.0/612.5
Ride height
4.5/4.6
Rebound
7.7/7.5
Bump
3.0/2.5
Aero
100/200
Brake balance
45% front
Brake pressure
155%
Diff
22/20