Help with Headers

After i would see what type, especially non TTI's, I would look uder their car to see if they were all dented up. I would say it was about 60% to 40% (60% being not dented). I was supprised because this is a major concern.

I'm surprised also having owned several small block mopars,all getting their headers damaged on one thing or another,but never since using tti's!!!