If the SLS head is a non turbo, then you can use it.
Make sure it has the idle gear and shaft.
Just use a cover plate from a 116/117 to cover the opening for the pump.
If it is a turbo head, then the pre chambers are bigger.

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76 240 D. Bought in 1998 for $25.
85 300D. Got it for free with a bad engine. ( Sold )
60 Unimog 404. What was left of it, was given to me. Now powerd by 617A.
88 560 SEL. Bought without engine and trans. Now powerd by 617A.
67 250 SE. Cuope. For resto or sale.
64 220SE. For resto.