Your GT3 or GT4 has a couple of intrinsic limitations when getting dialed in for track use. 1) The tie-rods don't have enough thread to get dial in enough negative camber. These tie-rod ends are longer and use a high-quality spherical bearing for precise steering feel. 2) When corner-balancing the cars, the stock end links "pre-load" the sway bars. This adds additional spring load to one corner of the car, creating an imbalance from left to right. Our adjustable anti roll bar end links ensure there is no pre-load on the sway bar, and that your car is predictable and friendly on the road and the track!