You guys are getting way to carried away with these braces. For frontal impact all this will do is move your rail bend point out to the end of these braces, right behind the shock towers. For those of you that have never set your car on jack stands under the main frame and then stepped on the front bumper you should give it a try, it will shock you. These braces will stiffen the rear portion of the front clip and should make the car a little more responsive since it should make the suspension work more.
I would gladly take more rigidity in the fronts of these cars even on dirt. With that said, I think 75% of Legend racers wouldn't be able to tell the difference with these braces. I use higher quality tube for my front clips so they are already a bit stiffer than USLC so I definitely welcome more strength. The bottom line is, its a long winter and don't worry to much about this.
After reading your posts Gimp, you really need to visit your physics books again.