on my 74, there is a part (563717 lh, 563716 Rh) that comes fwd from the base into the bumper, about 3" in from the overrider, on both sides. The ends come through holes in the valance just outside the air vent array.Then there is a part (563718), maybe 3ft long whose ends are bolted to the front of the 563717, 563716, and it has a plate for the rego plate to be screwed to.