just to clarify, if you want to update the diff, you have to match the speedo out of the same donor car/year, correct? i thought i saw a thread by deliveryvalve showing how to adjust your speedo to avoid this, if it is a problem... i too want the diff and speedo out of an 85 300D someday.

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1985 300D - 1984 Euro 280E AMG Clone (SOLD) - 1978 280CE (SOLD) - 1983 300D (SOLD) - 1981 300D (SOLD)