Hummer,
Welcome to CACC and hopefully to Corvette ownership in the near future.
I must say however, that saftey and early sharks do not fit in the same sentence very well.
Early on in the shark world, seatbelts were still an option and are not anchored into much. You also have the problem of some cars having rusty frames. That means that even with the factory seatbelts etc, they may not function very well.
The rules were just plain different back then. I can tell you some amazing stories of survival in wicked crashes. However, there are just as many tragic ones.
I would say that if this is a concern, keep to a t-top car as they will do much better in a roll over or any other type of crash, keep the horse power down unless you are very comfortable keeping mondo hsp under control, and or get some supervised track time with the car and learn its limits under controlled conditions.
In the end, it is most likely the fellow in the SUV you have to worry about that is trying to yak on his cell phone and read his day planner. If you respect your car and fear its power you will be just fine.