I had to replace the engine in my 87 300D. I elected to go with a factory crate engine. This was in Nov of 2003. The cost was about $7500 plus labor. The new engine does NOT come with new turbo, alternator, etc. All you get is a new block and head. In fact, I think the injectors had to come off the old engine.

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87 300D 265Kmi
Factory rebuilt crate 603.96x engine at 200K