Has anyone had experiance/ have info on what suspension stiffening setups tend to cause subframe warp/tear? I have heard a few things about strut bars and such, and how if you leave an upper without a lower, it can cause uneven flex in the subframe and subsequent tearing. Is it always a good idea to do front/rear upper/lower all at the same time? so that it is a uniform change? It seems to make sense to me that iff you stiffen the front of the car, and don't stiffen the rear, it would cause the frame to "twist" clockwise and counter clockwise unevenly. If anyone has any tech articles or extended expertise on the subject I would appreciate it, I'm in the process of planning my suspension mods. Thanks y0!