AND
Bodhibenz1987 has just gone through a complete W124 rear suspension R+R:
(This'll give you an idea if you wanna tackle it or not)
http://www.peachparts.com/shopforum/showthread.php?t=284067
[First question is Do You really need C.A. s ? Does this Guy KNOW Mercedes?]
If the Right side needs them then chances are the Left side does Too.