Well that answers that. Good pics. Those are definitely GTO parts.

In my opinion it looks sloppy, particularly if you look more closely at the headlamp area and how it fits the shape of the bumper opening. But I agree the concept looks great from 100 feet away if you squint a little. Otherwise the finished product would not satisfy my taste for fit/finish, but again that's always subjective as others might like it very much. And I'm always a big fan of letting people feel free to do ANYTHING they want to ANY car...always owner's choice.

But those pics very directly answer the original poster's question about how GTO parts would fit in a bird bumper...nice find...