How about the Raptor Logo, then from the side view you would see the SVT hood vent then rotate to Raptor on the mirror. The Raptor logo wold be really small but it would give it just the right amount of flavor.
I think this would be a much better option, although small, with some LEDs like you previously posted that flash with your turn signals. Truth be told now that I think about it, it would really depend on the color of your Raptor (concerning the original SVT idea), since mine is Molten Orange the vent shows the SVT in orange and the mirror blank "SVT" would also show in orange/amber which would certainly be overkill for the general area.
I was thinking "Raptor" too but that would have to be precision cut given the limited realestate of the blanks. If the price is right it would certainly be a worthy and creative project. You are definitely on the right track and kudos for your thoughts of creativity..
Just thinking out loud and on the keyboard...
What are the dimensions of the blanks? Well never mind I guess I can measure my inserts.