Also in Ann Arbor
Congrats (I hope!) on your purchase. It does sound like you've got your work cut out for you.
I also live in Ann Arbor and have a 1992 500E (pearl black/gray) with 52k miles. I've owned since 11/00 and have put just over 4600 miles on it since then.
Let me know when you take delivery of the car--maybe I could come by and check it out. BTW, where do you work? AutoStrasse? I'm looking for a new tech. I have used Tim Pott at Eurotech for ten years, but I'm not sure how much experience they have with Benzes...