The OM601 currently uses.
(If there's room for the longer 5 cyl block.)
[I assume you've already checked that?]
(You MAY have to provide a different Clutch.Maybe Not?)

Remember,that, chances are the 2.9 Liter 5Cyl was developed as a Truck/Lorry
engine.

____________________________________________________________________________________________________ ________Oh,and the VE type I.P. s ARE "ROTARY" (As in V.W. Etc.,Etc.,Etc.)
NONE of the engines we're talking about uses a VE type Pump.

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'84 300SD sold
124.128