Hi
Whereabouts are you?
The club has a classified ads page on the website and it is probably also worth talking to John Gillard at Classic Restorations (see website or FP for contact details), who sometimes buys in cars and sells them on after repair.
Outside the club sphere, the car and classics website is quite a good hunting ground for both private and dealer sales, and often have cars advertised from within Europe as well.
If you have contacts in France, or your French is up to it, then the French Leboncoin website is a good source also.