Chip, stick your Williams engine in it... use the money you have saved to prep it as a club racer.
and come and do few races in this series with me next year.
Its proper low budget pikey motorsport but everyone seemed to be really enjoying themselves at the meet I went to watch. Cllio will do just fine!
You can share driving with a mate as a pit stop is mandatory, or drive whole thing yourself.
http://www.classicsportscarclub.co.uk/tintops.htm