Can I use a donor 1979 300SD Turbo motor in a 1983 300SD ?
The 79 lists 617.950 and the 83 says 617.952.

I can visually see that the vacuum pump is very different (even different from my 1980 and the 81).
Guessing I can switch in the newer vacuum pump.

Turbo looks the same, same location of alternator, AC compressor, Power steering pump.

So, does anyone think this engine is a good donor for any 1981 to 1984 Turbo engine ?

Thanks for all your help.

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250