Quote:
Originally Posted by luketmarx
The hard part is actually going to be not enough clearance for the lower sub frame, going to have to do some cutting and welding there.
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M-B put a OM617 into W115, the first 300D. I'm relatively certain there's no need to modify the sub frame, unless there's a difference in the upper oil pans between 617s installed in W115 vs other chassis that had 617s.
What are you using for engine support arms? If you were planning on making them you can avoid the hassle by sourcing a pair of factory arms. You might also require a different transmission mount bracket, and a different length front driveshaft section. Shift rods could also be different lengths.