OK, I figured the large hose was the PCV valve connection. My IAT sensor fits the large bottom hole(Grommet), but not the side hole. The small hole, I can plug, if not needed. I can drill the side hole, if necessary.

Why is there two PCV connections? When the PCV valve opens it draws fresh air through the crankcase from the valve cover filter.
Do I have to run this back into the air intake to get it through the MAF? The pressure will be the same on both.