I think you need to talk to Tom Hanson from here. He is a great guy and if it's out there he can find it.
Location, Hours of Operation
The Mercedes-Benz Classic Center (
www.mbusa.com/classic) located in a
28,000 square foot stand-alone building at 9 Whatney in Irvine,
California, adjacent to Interstate 5, will provide its complete,
specialized services for Mercedes-Benz classics Monday through Friday
between the hours of 8:00 a.m. and 4:00 p.m. and can be contacted at
949-598-4850. Parts purchasing assistance is available via its toll
free number – 1-866-MBCLASSIC (1-866-622-5277).