I used to own a 205, and I miss it dearly. It was a lot of fun. One of my projects in the future, will be sourcing a clean 205, restoring it and upping the power. It's a long way off, but something I've dreamed of for a long time.
Out of curiosity, what engine options are there for say 170 - 200bhp+? Obviously there's the 8v and MI16 route, but what about something like a Duratec engine like in the caterhams? Could it be done?
What about a Civic/Integra Type R engine?