Are /6 torsion bars the same as 318?

My Dart Sport was originally a /6 but now has a 360...same block as 318. I have not changed the torsion bars and at first my headers would hit the ground (bumps). Then I added a big sway bar to the front end and my headers have dragged only once since. Changing torsion bars is not really necessary I found and a sway bar is cheaper and easier to change than torsion bars.