Dave, thanks for the basics! Could you direct me (or post) the highlights of the 3 generations of AC systems in R107? I had wanted to stay away from the automatic system, but if its a bolt in, common across the production years, and I've got the interior apart anyway....("all ya gotta do"). Thanks.

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Hanno
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon