The short answer is I don’t know. It looks just like mine with a phase 3 under the hood, minus the Roush emblems. The signature in your aluminum air-bag cover is a decal. I’ve never seen that before, but that doesn’t mean they don’t do that. It seems very unrealistic to believe that JR signed everything by hand. He’d be one busy guy. Don‘t get me wrong, I’ve met him and he’s very energetic, but hey, a guy can only do so much.
If I were you, I would call Tindol Ford in Gastonia, NC. You can talk to a Roush specialist who can clear it up. In fact, you can even chat online with one, and send your pics. I only live a few miles away and have been there a few times. Always a great experience.
I think Recon or straybullitt might have a Roush. If so, either would probably know more about this than I do.