My 71 hatch had the full width inner brace panel. My present 2 door 72 sedan only has a narrow rear brace just wide enough to hold the trunk latch, ~8" wide. Just speculating, the 2 door sedan cross brace below the rear window where the trunk lid hinges bolt on (speaker shelf), takes the place of the full width cross brace inside the tail light panel on the hatch model. From a 12-1-1974 repair manual (see below), the 71-73 hatch full width inner brace panel part number is D2FZ 6440492A. Click on photo for a clearer view.