Benzmac,
Here are some leads which may or
may not advance your search goal.
Good Luck and thanks for your help
in the past!
www-us.semiconductors.com
(catalog by system on left hand side)
www.ginko.de/user/franz-hamberger/acronyms.text
(acronyms list. may shed light???)
www.us-epanorama.net/companies.html
(list of companies)
www.dmoz.org/shopping/vehicle/parts_and_accessories/performance/
(click the CHIPDIRECT link )
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1979 300D
133K miles
1989 300SE
1995 C280