When you call a supplier and ask for a grill they want to sell you the plastic honey comb item that fills the space above the bumper on a 78 Firebird. A lot of cars have openings for air that do not have a grill in them. They are usually under the bumper. In The so called air dam they built,it still covers the air inlets below the bumper but does not take advantage of the rule that allows the dam to be at the leading edge.