No affiliation, Just saw this on the Calclub site and thought it might be good for someone here:
http://forum.calclub.com/index.php?showtopic=4050&pid=20822&st=0&#entry20822
I'm thinking of building an STU E-36. I've looked through the GCR regarding roll cages. Maybe I'm old and feeble but I can't find any ST specific cage rules. My assumption is 8 points of attachment no going through the firewall.