Is it possible to get a later model seat switch for a W126 to work in an earlier model car? The ones on my 83 300 SD are beat up and need to be replaced. I have some later model switches and pigtails that I want to use. Any suggestions about how I can go about this without turning it into a hack job?

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge