Weld in those roll bars people

[Steve85]

It would be interesting that a race organization is fine expecting that same floorboard (which is fiberglass in my case, sandwiched balsa wood in a C5 and nothing more than minimal sheetmetal in most other cars) to support the weight of the vehicle

The safety rules are very generic, and minimum recommendations at best. That said, for most cases for trackday/time trial/solo1 cars they are generally provide adequate protection.

What did your roll bars bolt to?

Saturn and 2 Integras.

What part of the car? And if floorboard, how big were the plates? I'm really just curious, not trying to start an argument...