I think you would be better served to look at 1991 420 or 560SEL's preferably the 420's. Find one with similar mileage, records, etc and you will have a better car. IMHO. For example check out this web site:
www.vintagesalesonline.com
They have a 420SEL 72K. Car looks great and the dealer is straight up kind of place. I bought my 380SE from him and can still be seen on his web site. His cars aren't cheap but you get what you pay for and he usually brings all his cars up to speed before putting up for sale. He uses the sam indie shop I use.