[madmaxx]

go buy a 4 post lift, they do not need anchored. I would think the whole floor or larger than 16x16 would have to be replaced. I imagine the bending moments on your bad can get pretty high. 2000lb times 4 feet? = 8000 ft-lbs of torque, it does not seam a 16x16 square would not pop out off the ground and let the thing turn over.