I never had one single problem with the Hedman style like Hedman, Summit, Flow Tech and all the other cheap ones. As long as your car sits at at least the stock ride height, you're good.
Yep. Installed Headman's in my 69 Dart, La 4 speed without denting them. I did take about an 1 1/2 out of the steering Colum collar because it was touching.