This 1987 300SDL has a rebuilt transmission and new radiator. Sounds like a good deal with a buy it now price of $1250. Pity I live too far away. I have no association with the seller.
http://cgi.ebay.com/ebaymotors/Mercedes-Benz-300-Series-1987-MERCEDES-BENZ-300-SDL-TURBO_W0QQcmdZViewItemQQcategoryZ6330QQihZ013QQitemZ230141178033QQrdZ1