BTW, this is what your car will do on the dyno when you only have 2 tie down straps on the back & that much HP. When Titan Motorsports did their 1131 rwhp pull on the Drag car in Vegas last year, they had about 4 - 6 straps on the rear. No shifting around.
The Benz w/ the over 700 ft lbs of torque on a street is nuts... I thought the torque rating from a 70's Buick 455 Stage 1 GSX was crazy enough.