I hope the photos worked.The hose into the manifold is pointing towards the drivers side. It needs to connect with the hose on the passenger side. There is a tank on the passenger side that is not mounted yet. Thanks
This will help a bit, but I think you might have to rework that dual 'Outlet' from the intake manifold for your application going by hose positions etc.
I do use the original set up on these cars with the original type V connector pipe.
Pictures attached. I do not know if they are clear enough for you, but those are all I have.
You can get a Y pipe that exits the passenger side. I believe the one you have in the picture is for a Shelby Cobra, The one you want is for an early Mustang. Try Tony Branda or Inglese.