There's a guy on Addison, just west of Lane Tech on the north side of the street who has a lot of hard to find Mercedes parts I've been told. I drive by the place every day, but have never stopped in.

I'm not sure of the name, but it's a dingy gray storefront with a large Mercedes emblem in the window accross the street from the power station and next to a motorcycle repair shop if you want to go looking for it.