Hello,

yes, that both cars, so SLK + Crossfire use the 170.... numbers is clear.
But for front spring is a chrysler spezific number used.
And that is my problem. In my car was mounted a DB spring.
The information with the damper of SRT is a good suggestion. Here I can ask in the german forum about the situation else.

If someone will take a look it will be fine. Itīs really not difficult and you donīt need any tools or garage to have a look. You see the number, if you look under the foglight in direction of the spring / damper.
Ok, you must fall down on knees, but I think you all are very sporty.......

Thanks
Stephan