Try M&M Dismantlers in Fontana, CA, 1-800-429-7278 ask for Chad (tell him I sent you). He used to have a nice SEC now has a nice 300CE and knows his MB's. Not sure if that is a California only 800# or not though. If it doesn't work let me know and I'll dig up the commercial number.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.