Only ones I've ever heard that got sticks were the euro 380SE's. Only ever seen one in the US...
A lot of the W123 manny stuff might bol up w/ little or no mods....

I say go for it!

-M-

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Currently:
1972 350SL Euro 4spd
1973 BMW R75/5
1981 BMW R80GS
1995 FZJ80 with OM606 Conversion In Progress