Not sure if this link will come through but p a r t s dotcom has OEM, which is
AFAIK Bilstein, for $130 each. Did not search by part number, however.
http://www************/parts/1995/MERCEDES-BENZ/E300D/?siteid=2&vehicleid=1195534&diagram=5715466&diagramCallOut=3
This is just regular, not HD. But do you really need HD?
EDIT, well, I see that it did not come through. but if you put in a dot followed by the url noted above it should work.
Rgds,
Chris W.
'95 E300D, 399K