That must be the bolts and clips for the front fender brace to the bumper bracket and the rear bracket to the torque box although most of those bolts should be 1/4 inch with 7/16 heads .The L bracket goes on last ,over the plastic dust shield and through the torque box with a 3/8 head screw ,like a gas tank screw . Most of the bolts for a 69 around the headlight buckets and front valance should be 1/4 inch with 7/16 heads .