AFAIK you don't have to worry about the wiring harness issue on a '97. The dreaded biodegradable insulation was used from '93 to '95. Beyond that, if you are looking for a mechanic there is a "Good MB Shops" section on this website that provides lots of recommendations, depending on where you live. That's how I found my indy three years ago.

http://www.peachparts.com/shopforum/forumdisplay.php?f=14

Good luck.

Jonathan