well there isn;t much place for everything to go. These cars were never perfect from the factory, so there is also the theory that "messing them up" is actually getting them closer to what the manufacturer intended. My uneducated thought is that there is probably no more stress placed on the car during this process than over the past 40 years of rail road tracks, jack rabbit starts, bumper jacks, two wheel lifts, etc. Installing the sub frame connectors and/or torque boxes removes some of the doubt that much more movement will occur. I would think that on a car thats mostly seeing street use it's ok. If your building a car for serious track time (straight or curved) start with the car on a frame alignment rack.
