After getting the two rounded nuts off i moved over to the passenger side. Same thing did top two first. Went to the bottom.....it seemed the individual whoever touched this rear decided he or the truck hadn't had enough punishment yet and rounded off another nut. To the point that it was baffling. We all know when a nut or bolt is stripped or rounded off. Stop trying and figure something else out. It was a sif he took a 14mm ( the correct size) with a impact and killed the nut.