There is a GP starting soon for the Wolfe Roll cages. The come in two flavors bolt in or weld in. You can check them out here.
http://www.wolferacecraft.com/index.htm
It says they are NHRA legal, but the door bars look alittle low to me, but if they have been passing tech, then I'm not complaining. All you would be road racers, this would also work great for you.