My Vitara handles the corners just fine. When i did my suspension lift I took the front sway bar out, but 1.25" wheel spacers in and never looked back.
Besides, a suspension lift would increase the odds of a roll over a lot more then a body lift. But then again, anything worth doing to a 4x4 will probably increase it's rollover potential in highspeed situations.
All you can do is drive carefully and wear your seat belt