The 4x4Wire JK recently underwent a slight transformation - from stock to gears, lockers, and lift. That change included new (larger) tires. But, that change did not include replacing the steering damper. Extended road driving pointed out the need to upgrade the steering damper in order to reduce vibration caused by the larger tires on certain sections of road.
The ultimate is the high-steer mod that includes a new style shock from Fox. That mod does require change of the mounting bracket and tie rod ends. And, the kit has undergone 2-3 design changes. As it stands, all necessary pieces and parts are not available, back-order until December. And, the key component, the Fox shock, is not shipping until mid-February 2013.
I will try a KBY shock and upgrade to the the new high-steer kit when parts are available.
The pictures display the Synergy Suspension (http://synergysuspension.com) Jeep JK Steering Correction Kit. The first image is the stock configuration.
Synergy High Steer is installed and front end aligned. While that mod works as advertised, another "gotcha" has surfaced. Seems the yaw sensor for the JK is not happy with stiff sidewall tires and a lift. This is noted when you are in a sharp turn at speed (curved freeway entrance ramp). With the lack of sidewall flex, the yaw sensor will automatically apply the brake and reduce speed. It is a strange and unforgettable feeling.
Luckily, there is a cheap and easy fix -- tire pressure.
My tires are Load Range C. Those tires seem to need less than 35 pounds air pressure in the tire.
Higher load range tires require less tire air pressure. For example, my alignment shop (Roger Daniel's Brake and Alignment, Santee, CA) has found than Load Range G tires require tire air pressure in the 28 pound range.