I am preparing to install my engine in my cobra an I needed to remove the IAC assembly to re-orient it and to polish the chamber cover. I thought I'd post a few pictures for the IAC air block and plumbing under my TWM intake. As you can see, there is a distribution block just below where the rear intake breather would go on the TWM intake for my FE. A line runs from this block to each intake runner on the the TWM manifold.
Here's a picture of the inside of the intake ports - you can see the fittings where the IAC plumbing connects to the ports.
The following shows the IAC and cover reinstalled on the TWM intake. A 90 degree fitting and a custom made aluminum cover allow the IAC motor to mount neatly on the the back of the TWM intake.
With this setup, my FAST XFI computer can regulate the idle speed of the motor my allowing a controlled amount of air into the cyclinders at idle.