its a reinforcement bracket that is built into the support its not a removable part.
here is a pic of what is left of mine.
IMAG2708 by
jarrod vanwinkle, on Flickr
They go here on the inside of the core support, also if possible if any one has a pic of the lower radiator mounts installed I would like a pic of that as well and if they are bolted on or welded on and where they are placed.
IMAG2709 by
jarrod vanwinkle, on Flickr