Being the Diesel guy that I am, and hanging out in Diesel Discussion, I did not know that a separate SL forum existed!
My most recent acquisition is a 1985 380SL with an OM617 Diesel engine conversion. It is now a 300SLD:
http://www.peachparts.com/shopforum/diesel-discussion/399230-new-me-85-sl-diesel-repair-renew-thread.html
Originally built by user mach4-
http://www.peachparts.com/shopforum/diesel-discussion/308791-380sl-diesel-conversion-project.html