Considering the age and mileage on the car, I'd say buy a used one that was working before it was pulled -- much cheaper than buying a rebuilt one or even rebuilding yours by yourself. That's what I did on my 500SEL which has even much fewer miles.

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1999 Mercedes-Benz S600, 103K miles - garage queen
1988 Mercedes-Benz 560SEL, 89K miles - daily driver
2007 Hyundai Sonata Limited, 31K - daily driver