Firebird sorry to see that picture, thats always every racers nightmare when parked in the gravel.
I have an aftermarket very stiff rear anti-roll bar (inch plus I believe) I have just taken off the Camaro and you are welcome to make me a reasonable offer for it. However I would concerntrate on getting the front end to stick rather than get the rear to break away. What engine have you fitted BTW? Olds, Pontaic or Chevy as you could run any of them legally i would have thought.
If you want any advise give me a shout I also have a few bits and pieces including a wrecker but they are all camaro stuff but a lot of cross compatability as you know.
Oh and watch that Andrew Busby I have heard he does'nt like us yank drivers!