the first source you mentioned is one I used.
I also a document on Indochina unit organization created by a French contact of mine and this source:
http://www.amtrac.org/pdf_files/history/amph10.pdf
I'll see about comparing info when I get home. Also, the second picture on the French website, the "Le Crabe" section, is not an M29C. Its a Bren Carrier.