Mike,
Here is the contact info for a guy in Sausalito, CA that sent me a very
complete info package a few years ago.  He specializes in turbo diesel.
Don't know if he is still in business.  If you find him let me know if he's
still open and if same location.  I couldn't find him on the web.

Scott Foss Turbo Diesel Vanagons
2665 Gate 5 Rd.
Sausalito, CA  94965
415-332-3904

This info is from March 1997.  Let me know what you find I'm still thinking
about a turbo diesel westy maybe syncro.

Blitz