Spitfire steering column and wheel

I am looking for a steering column and wheel from a later Spitfire. It will be going into a MG Midget engine swap project.

http://members.tcq.net/rlstrand/index.html

The original steering column had to be removed to make way for the exahust and head. The Spitfire unit has a smaller wheel and shaft.

If there is one out there let me know what you need for it.