Head are different between D and K Jet, there are some block differences (oil filter housing in particular), but I don't know which numbers have what, alas!

If you are contemplating a swap, I would advise staying with the same number engine unless you can look at both of them side by side.

Definitely, the oil filter housing differences can get you!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!