Hey John,
I re-read your original post, and I really didn't answer your questions... Sorry.
Here's a link to Nor Cal SAAC Open Track Rules:
http://www.norcal-saac.org/ot/otrules.htm
There's a section on Safety Equipment Requirements. I would view this as a minimum list, and I'd be surprised if your Cobra wasn't already equiped to meet these requirements.
My response was more in line with tuning your Cobra for optimal performance (handling and braking, specifically). I know that Craig and Roger can also make sure that your Cobra meets the minimal requirements for OT, also.
While I have your attention, tuning/equiping your Cobra for track (both for performance and safety) is only 1/2 of the fun. The other 1/2 focuses on driver safety. I could go on and on about this, but here's a good link that covers most of the basic driver safety equipment:
http://www.bellmotorsports.com/equiprec.htm
Hope this helps,
Randy R...