The rear Tarett GT bar was hitting the OEM LCAs on both sides. My shop said that the OEM center puck allows a lot of axle movement forward and back. They claimed 4 " total movement, so that was one of my goals to eliminate this movement. 2nd year, I got the Tarett Cup Race LCA's installed to -2.5 f and -2.4 r. with no axle movement Later I increased the camber to -2.9 due to Hoosier recommendation of at least -3.0 front camber.
I used Tarett's swaybar recommendation to start, but found that with a Wavetrac LSD, I needed more oversteer in front, so I stiffened the rear and used less in front. That combo seemed to work well. I could do a set well, but the biggest issue was no under steer after the apex with the LSD pushing for all it's worth. So unless you also have a LSD, then start with Tarett's recommendation and go from there. I have a larger front tire footprint to add traction to the front. I run 255/35/18 on 9 inch wide wheels f and 275/35/18 r on 10 inch wheels. Using RE71RS and feel really good about their longevity.
I thought about the Tarett camber plates, but read numerous web responses about how the center bearing would fail causing all sort of noise, The removal of that bearing is a lot of work, So, I did not do this mod, stopped at -2.9 camber using OEM camber and Tarett cup LCA's shims. Longivity says this was the right move as there is no way that camber plate bearing would last this long. But, I also agree that using both the LCA;s and camber plate makes each work well in their respective area, meaning not taxing either mod to the max.