This is the car I got the M-pump and 4-speed driveline parts from.

VIN WDB12313010276511
Model 300 D
Chassis 12313010276511
Engine 617912 10 166257
Transmission 716005 00 907285
Order 0 1 283 81578
Approx. year 1981
Lights HELLA
Cab 06963
Dealer authorities sales / company employee (12 months) (283)
Interior cloth anthracite+green (036)
Paint
737 classic white (T) (с 01.01.1975 по 31.12.1985)
Options
411 mechanical and hydraulic sliding roof (с 01.10.1965 по 31.10.1993)
466 central locking system (с 01.04.1970 по 31.10.1993)
534 antenna, mechanically operated, without radio set (с 01.01.1963 по 30.11.1990)
591 heat-insulating glass, all-around, heated rear window pane, (single-sheet safety glass), Germany
green heat-insulating glass all round, heated rear window, single pane safety glass - Germany (с 01.01.1972)