the side scoops were hand laid fiberglass and made of two pieces bonded together.the two mounting studs were welded to a small flat plate that pop riveted to the back of the scoop before the halves were bonded together. the brake duct cone was bonded to the back of the scoop as well.the other cone was pop riveted to the inner wheel tub and a 3 inch hole was cut in the wheel tub. a flex tube joined the two cones to vent air form the scoops to the rear brakes.the scoops replaced the two finned vents in the quarter panels and the strip between the two finned vents was drilled to mount the scoops. the inner mounting plate for the finned vents was cut away,and not very cleanly.the cone for the brake ducting on the scoop passed through the lower opening for the finned vent. this scoop is off of my black car ,it is a real Shelby scoop . the ones for the blue car were missing.