No They probably won't.
But this comes back to my earlier question regarding accidents you've attended, as a percentage of accidents you see modified cars would be involved in how many? 1%? 10%?
It couldn't possible be a high percentage so why not spend the time and money on driver training so the idiot in what ever unmodified car doesn't clean up the famliy in the what ever wagon?
As far as the burn outs, street racing etc the stance is clear so if you get caught tuff. But this is a massive over reaction to a problem that bearly exists, if your talking road safety.