That is the entire front clip from a 73. Including radiator support, fenders, nose, grills. Probably the hood as well. Each year had its own hood, differentiated by the way the underside stampings were cut out. The 73 fenders differ from the 70-72 in that they have the two bolt mounting boss for those flat, steel reinforcement bars. They did use the 70-72 hood latch and jury-rigged it through the grill. The 73 used a cable setup because all of the 5-mph bracing got in the way.
The 70-72 radiator supports are impossible to find. They had a flat top without the two recesses for the 73-only, slab steel, fender reinforcement bars, that were also part of the 5 mph crash rules. Here is what it should look like:
