It would allow the front end to be lifted higher before the upper control arm contacts the frame bumper. I don't know what it would do to the geometry, but I also don't care to find out...
Exactly. It lifts nothing. It ALLOWS more lift. As it is with no additional lift, all it will do is slam the upper control arms into the frame. I am not even sure there are any torsion bars that would let them give all the lift they could allow. Crazy cool old school stuff though.