I was thinking more about what the Brabster would look like in the rear view mirror of my Caterham.
Only kidding, but you will have your work cut out against any thing of a similar ilk, especially in the hands of really capable drivers. They will probably be running slicks or track day type tyres, so will have much more grip available than you.
If you were to "Race" me on the road, you would win quite easily. I just don't bother with that type of thing other than the occasional "traffic light Grand Prix" if I meet something interesting. There are too many risks involved.
It is behaviour best saved for the track.
In France I spend most of my time looking in the mirrors, as I have to go out with the single seaters unless on a club day.
It's no fun as they are seriously quick cars, mostly driven by amateur racing drivers on test days. The combination of driver and car is one far more capable than me and my 7. I think I am the limiting factor though.