I have owned a 220SEb coupe for about twenty years. I have found that the best source for genuine M-B parts is Caliber Motors in Anaheim, Calif. They sell new parts to the public at whole-sale prices. Don Tibbetts is the man to speak with. He is extremely knowledgable and always helpful. Carpets and headliners can easily be sourced from
World Upholstery, Carpet, tops & seat upholstery for collectable cars Mercedes BMW Porsche Jaguar Fiat Ferrari and Saab or
GAHH: Convertible Tops, Auto Interiors, Quality Convertible Tops Both sell quality products to fit your model.
These cars are an absolute dream to work on compared to just about any other car, even other M-B's. I also have a SLC that does nothing but drive me nuts and suck fuel.
I have a pile of parts of every shape and description to fit this model auto. If you need anything let me know because I am dying to reduce the inventory in my cellar, even if it is one knob at a time! Unfortunately, the fender is going to be a tough one to source, especially the passenger. If it can be saved in any way, save it because you are looking at serious dollars to replace.
In addition, if you have any questions on "how to do it" or "where to send it", just send me a PM.
One last word of advice, make sure you have genuine M-B manuals, a recent copy of Hemming's Motor News, and a good set of tools. And have fun.
CV