Given his difference between the asking price and the actual value of this car (I agree it is sub $2K), this doesn't seem like likely to be a successful purchase. Shame it doesn't have the original shifter (and perhaps transmission). Given the rust issues, the seller is not being open and honest with his ad, so I would move on.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).