You description and photos are very useful.
I am thinking of changing the shock absorbers on my car, the rear of the car make a thumping noise when going over rough roads, more so then you would except. Have you ever replaced your sub frame mounts, these seem of so i've not changed them?
Did the new rear shock notabily improve the noise, ride comfort ??
how much fliud did you get..MB gave me 2 litres of power steering liud and said this was enough to refill the system once changed?