I do have it in writing and I asked how long the estimate was good for. He said 30 days. They are a very reputable shop in town, specializing in suspension components for everything from a tractor trailer to a passenger car. Not necessarily specializing in MB but they said they can do my car.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R