You will find a 2.88 ratio much more easily, from a 1985 300D or 300TD
Try Acme in Santa Rosa, tel 707-546-6816 or 415-457-6338.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!