i see. i figured that was the case.
is this the package that you are reffering to?
http://www.brabus-usa.com/pkW203.html
looks good, but even thought thy they list it as "C240 and C320" the 240 doesn't show up once u click the link. o well. more horsepower can't hurt. it's cool that you have parents who are willing to tune their car.