Mike,
Cobra's run in the Street Car class, so the original roll bar that comes with the car is fine. These track sessions are not "races" and while passing is allowed, they are not considered competitive events. If you are comfortable with your roll bar, we are too.
We've had Factory Five, Lone Star. Superformance, Classic and ERA's among others run these events with their original roll bars.
Helmets are required and we have them for rent if you don't have one, so come on out for a fun day on the track!
