I would also check the alignment and gaps between the fenders and doors. Are you talking about the entire front clip, fenders and all?
I recall that there was a European guy on
G-Body Forum that was putting a Monte SS header panel on a Cutlass Cruiser wagon. He realized that he needed the fenders and hood as well. But I think he had many hours of metal work ahead of him. Never saw any more progress of his build.
I guess if there's a will, there's a way, as they say.