Have a look at the website for the british classic F3 series,
www.classicf3.co.uk
That has a link the the site for the french series and contact details etc. The british series are going to Spa in May to take part in the french championship round there.
A number of cars came over from France for the classic F3 round at Brands Hatch last season and a larger group are expected over this season.
The British classic F3 series is very good and has a very attractive calender of events, including a round supporting the British F3 championship at Brands Hatch.
Just wondered why you are chosing to race in the French series?