I have seen broken body mount bolts on non-body lifted vehicles. Over time the bolts seize into the weld nut, or in Noangel's case, the bolt rotted to the point where it tapered to less than half it's diameter (salt/sand got in between the bolt and the body mount rubber and rusted it away). I went to loosen it and being rusted to the weld nut, and rusted to less than half it's diameter inside the rubber mount, it snapped. I am going to have to cut a hole in the floor to get to the topside and see what it looks like at the weldnut. After it is fixed and the bolt replaced, the hole mount support is getting filled with a mix of grease/oil to keep rust and rot out.
Moral: You have to keep an eye on the bolts regardless of body lift or not. Yes a body lift adds more stress, but the kits are "designed" for those added stresses (keeping in mind anything can break/bend with enough force). Buy a quality kit (you usually get what you pay for), follow the manufacturers recommendations and keep an eye on them following. IF the instructions don't say to use anti-seize compound, I would suggest using a healthy dose during installation, that way if you do have any problems removal will be easier.
Ask around and see who has used what kit, what abuse it sees, and what results they have gotten and base your purchase on that. Otherwise it's like Russian Roulette.
