Any time a vehicle is lowered, a camber kit needs to be installed so that the proper alignment can be achieved. This would be true with '05's as well as '06's. I've gone with the Steeda lowering springs and their camber kit as well as their bump steer kit and control arm relo kit. The bump steer kit reduces the suspension's tendancy to steer the vehicle when going over railroad tracks. The control arm relo kit (requires some welding) lowers the center of gravity. The vehicle now corners like it is on rails. Also something to consider is an adjustable upper rear control arm and adjustable panhard rod (also av. from Steeda). When lowering, the drive shaft angle to rear axel assembly changes slightly. The adjustable upper rear arm can put the rear end at the correct angle again. The adjustable panhard rod enables you to shift the rear end to one side or the other. I noticed that on my '05 GT that from the factory the rear end was slightly shifted to one side. Since I was going to put fat tires on the front and rear, I diddn't want any rubbing due to the rear being shifted to one side. The Steeda adjustable panhard rod stuck the rear end exactly with the same tire to fender well space on each side. Conclusion: All the suspension stuff is great, but if you are going to lower install the camber kit at least. Good luck and regards
