you can try ebay for owner manuals but as far as the antena goes i just bought one (antena mast) for $23 at performance products, they have a really in depth catalog for every chassis style, yours is as mine W126 so go online at performanceproducts or performanceproducts4benz and order a free catalog, or just call them up, i've ordered other things there and they have pretty good, but i think you should at least see the catalog for yourself, its free
p.s. if you do find a place that sells manuals let me know cuz i want one too for my 1987 560 sel
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