As far as I know its all stock I'm going to be towing about 5000lbs cause of my camper so are the factory brakes good enuff or do I need to upgrade ???? I don't even know what's on it except pads and rotors,,,are they dual piston???? Do they make dual piston ones for us????? I saw some power stop slotted and drilled rotors through eBay,,, what about them and I saw summit had some good looking callipers so what should I do????