What i just finished doing on my dart is the addition of some Reiley Motorsport tubular upper control arms with heim joints and also his strut rods that also use heim joints.This gets rid of the bind of rubber or polyurethane but keeps the control.
Also there is an even smaller diameter torsion bar than the /6 bar that Mopar performance used to sell. You still maybe able to find a set around.
Duane