39 tgu
 

Pics from Miami boat show on Cig Facebook page show a39 TGU with the port engine toward the bow, my 2007 has the port engine toward the stern. Wonder why they changed it?

They changed this in 2008 I believe. Attached is picture of our old 2011

If I remember correctly this allows for both sets of headers on both motors to be ordered stock.
If the starboard motor is forward then the inboard header on that motor is of a different configuration allowing the tailpipe to cross over the top of the coolant reservoir of the rear motor . ( this is what I remember reading on a thread)