I have another novice question!
I don't know if any one of you has a lot of experience dealing with German auto parts personnel but I can tell you from my few contacts that they are very meticulous concerning what parts go on what car.
I read somewhere you can order a book from the Mercedes plant here in Stuttgart specificially for a MB to include year, make and model. This book gives you the spare part details to include MB part number to make ordering replacement parts a lot less of a hassle.
I don't know the German phrase for this but I sure think it would simplify getting this tired Benz some new life.