There is always a possibility of the tub folding when you are in a roll over situation. Most "roll cages" you buy are sold as a "sport cage" so that the manufacturer can be absolved of any liability in the event of serious injury/death. If you are concerned you can buy a frame tie in kit with your cage to help solidify the whole vehicle. I know GenRight and a couple other manufacturers make universal kits like this one http://www.genright.com/ProductInfo....ductid=GRC5500
They are pretty inexpensive and would be a great addition to any cage kit.