My $.02 worth....
Dodge was smart enough to address the issue of race safety by producing the Competition Coupe.... fuel cell, fire suppression system, ignition cut-off, safety harnesses, safety-designed race seat, full roll cage with side bars, window net, right restraint net, etc., and about 400 pounds lighter than a street car.
I was running a hot practice lap during a private test session in my fully race-prepared 96 GTS at VIR. I was the only car on the track. Lost control of the back end in a fast right-hander, helicoptered through the wet grass, hit the guard rail broadside on the driver's door at something approaching triple digits. What saved my life was the Nascar-style side-bar at the driver's door and the window net which kept my head inside the car. Knocked every body panel off the front, rear, and left side of the car. No rollover. Fortunately no fire and only a minor concussion along with a totaled race car. Purchased my Competition Coupe later that year and realized what an outstanding improvement this car was in terms of safety.
My teammate was racing his fully race-prepared 96 GTS Viper at Road America. Going about 120 MPH into the Kink, his PS line failed causing a fire in the engine compartment and filling the cockpit with smoke. He immediately hit the fire suppression system button and got a face full of fire retardant. Do you realize how hard it is to stop a car from that speed when you're totally blinded, can't breathe, and thinking about how quick you can get out of the car without burning to death? Rollover protection wasn't a factor, but fire suppression and advanced race driving skills were.
I can go on and on about race incidents, but here's the quick point.....The roll protection you are talking about may or may not protect you from the many different freak incidents that can occur on a race track. Don't get a false sense of security because you have a rollover bar.
If you want to race and feel as safe as possible. buy a racecar. A fast and good-handling sportscar is not the same as a racecar.