Here is an old post with a source:

I got a rebuilt distributor from Ed Hendrich (or something like that) at EEC in Los Angeles. His email is: heidrich@sigmanet.net
His address is: 6059 Lake Murray Blvd, La
Mesa CA 91942-2506. I don't have his phone number.

The price was very reasonable and I was pleased with the distributor.

Also try:

http://www.sltechw113.com/

http://www.pgauto.com/home.htm

Provide Bosch number found on the distributor housing to the potential source. I believe a late model SL like yours is 0231 116 062

Regards,

__________________
Regards,

Tom S.
1971 280SL Tunis Beige Metallic
1971 280SL Tobacco Brown (13K miles)
1970 280SL Deep Red
1994 E320 Cabriolet
1999 E320 Wagon 4Matic
2002 LX 470
1992 Land Cruiser