Although based in Florida one of the best mechanics for classic Mercedes is Pierre Hedary. Pierre advertises in the Star magazine. He is the best, very honest and trustworthy.
I have the same car. What about one close to Irvine?
A very good independent Mercedes shop is located in Monterey Park, CA. The shop is named Silver Star Service and they work on all Mercedes vehicles (classic and late model). Very competent, fair and honest. The owner is Robert Wong. They are located at 600 W. Garvey Avenue, Monterey Park, CA 91754. Their phone number is (626) 284-0312
Star Motor Service Bees Ferry Road, Charleston SC They have worked on all four of my cars including 1983 280SL. They do excellent work but don't expect discount rates.