i just purchased some hunsaker seats and mounted them to the factory seat brackets which is mounted to the jeep body. now im installing some 5 point harnesses and i could mount the lap belts to the floor of the jeep, seeing as how the seats are mounted to the floor. but for the shoulder straps i have a rear spreader bar. would it be a bad idea to mount the shoulder straps to the spreader bar? would it be safer just using the lap belts for now untill i get around to adding bars to the cage for the seats to mount on?