sorry dude but the CLS55 AMG is in an entirely different class in so many ways.
its like a low 12 second at 117ish car............
what would be a good race is the CLS550 (non-AMG)..........thats probably about exactly the same as a stock L99 (13.3 @ 107)
my dad's got the CLS550 and i gotta tell you that thing MOVES pretty damn good for a big car.......2800 RPM gets you peak torque, 7 speed auto, geared pretty nicely. that thing will spin the 19 inch wheels from a stop with zero effort. FUN car when he lets be drive it