Fortunately, Southern California is full of used parts for old Mercedes Benz cars, and Rusty
has already found a $400. OM617 cylinder head with turbo and bolted it to the block;
The old Garret AiResearch T3 turbo will go away with the old head, it was dripping oil everywhere, and the new Borg Warner KKK A3 comes with a replacement head, and should be less of an oil dripping hazard.
Should be back on the road by the end of the week.