No, the stock seat belt will not work with the bench seat. You will need to run harnesses. 4.2 auto latches are a great belt for kids, due to easy latching system. Also the 5.3x2 is another great belt, it uses a 3in. lap belt with 2in. shoulder belts for comfort.Anybody know if the stock rear seat belts will work with the PRP 52" bench seat? I realize I will need to add a new harness in the middle, but am just wondering if I can keep the stock belts on the sides and have them come through the wholes in the new PRP bench seat?