I don't see why electric power steering should be an issue if correctly fitted.

A previous poster seems to have suffered at the hands of cowboys.

I know of several people that have had it retro-fitted to various classic cars with good results.

I've spoken to the company below at a Classic Car event and was very impressed. They had a demonstrator (Jaguar XK150) and the installation looked very neat.

Might be worth talking to them.

http://www.ezpowersteering.nl/23/Home.html

I'm getting one for my own car (Jaguar) once the restoration is a bit further on.