Originally I had this 9500Ci installed in a SLK but have since moved it to a ML. I wanted to keep everything as stock looking as possible and after some research found a company that makes a cluster interface for Mercedes (Midcity Engineering). The interface was relatively inexpensive compared to the 9500Ci and I figured cutting out holes in the dash would cost more to replace if I ever wanted to change it.
The installation was very simple. Basically plug and play.
Below is just a quick photo of the detector turning on. Basic controls are now available on the steering wheel and the original display is not used.