need some help
 

Im taking of my bumper from an 88 vert and i cant seem to remove it i toor out almost all of the screw/bolts but i cant seem to figure out how to remove the side tabs/bolt/screw? i dont know what the hell it is i keep feeling around and i cant feel any screws just 2 plastic circles. could some one throuw up a diagram of removing the bumper. thanks

Do i have to take off the left and right quarter pannels to get the bumper off? i need help ^_^