You do realize that I did this already?
the mounting plate on a real 914/6 column will not fit a later car. You have to cut the mounting plate off a 4 cylinder column and weld it to the 911 column.
You need the metal area in the dash for the ignition lock surround, because the 911 column is flat to the dash, and the 914 column tilts upward slightly. You also have to trim the top of the clamshells to clear the tach, and you have to make a trip piece for the lock, as the factory one is NLA.
I have pictures on my computer at home.
If you run into problems, give me a call.