I'm doubtful anyone needs one, but I have the ZF 4 speed out of 1994 Jaguar XJ6 for sale. It has 97,xxx miles on it and worked flawlessly the last time the car was driven.
You can email me directly at b.bartow@gmail(.com) or you can PM me and I think it will go to that email address.
I know the same model ZF was used in a couple of BMWs, but I don't know if they interchange with the Jag unit.