Try these:

http://www.dieselgiant.com/trannyleverreplace.htm

http://www.dieselbenz.info/wiki/index.php?title=Transmission

http://www.continentalimports.com/ser_ic20242.html

Also bookmark this page of DIY with w123 bias:

http://boostnbenz.1baddsm.com/DIY/

Cheers,

Bill

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1972 280SE 4.5