Aftermarket frame crush zone(s)?

[samckitt]

For the track, everyone wants a stiffer frame with less flex, but I have always wondered if these are aftermarket stiff frames may have some safety issues build into them.

Look at alot of them & notice they all have one thing in common, straight front frame rails, parallel to the ground, parallel with the direction of the force applied to the car if hitting something head on.

On my Monte frame I noticed the front frame section is at an angle, meaning the force applied to the car if it were to hit something head on would allow the frame to bend & absorb some of the force.

I also noticed on Dale Jr's Nationwide commercial, that the front frame on his car has a arc to the front frame section. Assuming this is a crush zone that would collapse if the car were in a head on collision.



What's your thoughts?