If you are looking for station wagon / estate information have a look here
http://www.peachparts.com/shopforum/showthread.php?p=2780508&posted=1#post2780508
It looks as though the front of the wagon from part number 5 in the first picture (post #1) forwards is the same as the sedan / saloon / 4 door.
So Mercedes just did a cut and shut on the sedan to make a coupe - and they just cut the back end off a sedan floor pan to make an estate!