I don't know if he made it, but it looks like a rendition of artwork done by F-I-E-R-O some years ago. I have a hat with that embroidered logo without the 3.4 DOHC on it, but it came from a company local to me.
[This message has been edited by fierofool (edited 06-09-2017).]
This is the one I have on the car already, but it came with the car. I have sent a message to the PO to see where he purchased it from. If worst case scenario I will go buy a 3D printer and cast my own.