I am not sure on your year and model but on the W123s you People have pulled the lower Control Arm forward.
The details of how that is done is I believe somewhere in the threads:
DIY Repair Links
DIY Links by Parts Category - PeachParts Mercedes ShopForum
PeachPartsWiki: Do It Yourself Articles - Mercedes Vehicles
I am not entirely in agreement with the way it is done as I think if you Lower Control Arm Busnihing are old it could fininsh them off.