Just a quick comparison between the GT500 Grille Opening Reinforcement panel (top) and the same from the GT350. Perspectives aren't a perfect match but close enough and I cropped portions of the GT500 panel that were obscured by bodywork, etc. Regardless, it looks like Ford was telling the truth in that the part looks to very much be carryover aside from the hood pins/bases being added to the GT500 GOR.