It's just the cut in xpipe from frpp. Actually it's just the "X" so to speak. cut into the down pipes after the cats and then clamps into the stock midpipe.
It's frpp m-5251-r. Ford Racing Performance Parts - [Part Details] That's the link to the part in the frpp directory. They list it as for the 05-10 gt. I'm in 07753 zip, central jersey.