Marcos Maniacs

Hello, this is my first posting, so a big hello to everyone. My car 
is a 1985 Ford 2.8 V6 with a newly restored and galvanised chassis. 
I'm currently looking to improve the interior and wondered if anyone 
has fitted more modern steering column controls? I would like to get 
the wiper and lighting controls onto the steering column, preferably 
without obstructing the speedo too much. I remember seeing a Mantula 
Spyder in a garage once with just such controls, so any help on what 
might be compatible(without too much modification) would be much 
appreciated.
many thanks, Nick.