Originally Posted by Best Toy Ever
I just picked up my '06 limited coupe . . .
. . .53 more horsepower from the same engine.
Congrats on your purchase and welcome to the forum.
If you are referring to the normally aspirated MB 3.2L V6 - there is no power difference (comparing Crossfire, SLK 320, C 320, etc).
The Supercharged version adds a lot more power, but I'm not sure where you are getting your numbers.