Manual Trans Conversion W140 Coupe
I have seen pictures of custom cut scatershields mated to a getrag (bmw 260 or 265) transmission, I am sure if you were to look around the web you will find them, I may have one or two saved on my system, i ll take a look and if they re there i ll post them.
The way they had accomplished this was to cut the section that houses the clutch and cylinder and then bolt it on and then weld it to the 5 speed manual, as far as the T56/ZF variants I have yet to see one, but i m sure it is possible!
The M-119 is an awesome motor and deserves to have a stick shift behind it, but since these cars were made for cruising, I guess no one attempted to sale the idea of a stick shift to a banker type!
There was even a count as to how many folks will be interested in such a device so that they can make a few and split the cost, but I guess it never saw the light of day, otherwise we would have seen something new by now!
Good luck



