I have the exact same situation on my 1982 300TDT wagon. Does anyone know if a rebuilt transmission from a 1985 300SD will work. I understand that there were some modifications on the 1985 so that they shift better from than the earlier version. I know where I can get one cheap. What do the rebuilders usually replace besides the clutches and seals-new pump, modulator etc? Should I replace the torque converter considering all the debris in the tranny.