So the mystery has been out there, will a 350SDL crank fit into an m103, what else is needed to make this work and what will it actually do? Instead of a 350SDL crank for the conversion, would a C36 bottom end work better.
The last few threads date back to 2002 about this when most of us simply dismissed it under the fact that its too expensive.

Chime in if you have done this or if you have done research and you got stuck somewhere. And hey, if anyone wants to send spare parts my way, I can put them in the spare engine I have.
Let the brainstorm begin!!
Pete