Whiteline from RalliSpec $150, aledgedly 18mm, 20mm, 22mm adjustable.
reduce under steer
improve rotation
by increasing rear roll stifness
new: 20mm, 200mm, 180mm, 160mm adjustable fulcrum
stock OB: 18mm
calcs
front: 19.rmm stock OB
Other legacy's:

12 and 14mm skt, 14mm wrench
Easy bolt on
ground clearance
re-starting screws
120mm fulcrum (softest)At first drive I was a little dissapointed. I was expecting to feel a considerable reduction in roll, especially from the back of the car but it does not feel like that. After driving the car for a day I came to quickly appreciate the subtle yet significant change in the cars behaviour.

Strange as it may seem, it is as if the work was done on the front of the car. Turn in response is now much more immediate and the car seems more precise in a straight line. Steering input is more immediate, almost as if the steering reack ratio has been improved. It reminds me a lot of my old 1976 Opel Manta rally car (almost) I built back in England. I am tempted to up the stifness, it's currently on the softest (18mm) but as I have yet to drive the car in the wet I think this may be unwise. The car should be more suseptible to oversteer now especially lift-off oversteer but this phenomena is not apparant in the dry.