Did you guys who did replace it do it through the front passenger door?
I did mine like that a few months back and what a MISSION!! At one stage I thought it was impossible to fit through the door! If it wasn't for the mercedes manual saying that it could be done that way I wouldn't have persisted. It took a lot of manouvering and far more flexing of the headliner than I would have liked! But it did eventually work
Jase