Before you pay a machine shop to fab one I would suggest you try a company called Fastenal at www.fastenal.com/ They have locations in most metropolitian areas. I would not be surprised to find that they have exactly what you are looking for. I have been told that they have things that no one else has.

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82 380SL 41K miles sold, 98 SL500 44K miles, 13 C300 4Matic, 14 CLA-250 4Matic