They lowered the body onto the frame by 1/2" or 1/4". They don't roll, trust me. I drive in NYC, I weave and bob, I've done over 110mph on country roads and just yesterday did the "deer avoidance test" around a mazda 626 at 83mph cause he was road-raging with me, and slammed on his brakes in front of me.
But yes they did change it slightly. I'm not sure how much it actually effected the handling or stability, but they are stable.