In the BaT comments, KevinH talks about his E9 having a ZF 4 speed with a notchy feel to it. Was this the OEM transmission?
Yes - it was (for my 1970 2800CS). It leaked like an SOB, but felt great in using. It had some synchro issues and if I kept it installed, would have had to had it looked at, but... with the 5 speed already in hand... Figured that would be good to do.