Mike,
Here's a good place to start TSD rallies for your area:
http://www.scca.org/amateur/roadrally/
Of course, if you come to California you could run TSD Rallies, Monte Carlo Rallie (like this one) and performance rallies.
I do not think the Cobra has enough safety features for the all-out nature of the Performance Rally (AKA Rallycross). That would be very hard on the car, too. The Monte Carlo style rallies give us plenty of time on the wide open desert roads where there's no traffic (or even any other cars) to have a little fun at higher speeds. The scenery can be very spectacular, too.
Paul