Here's some more pics to show what we've got going on...
The radiator support is in line behind the valance grills, airflow will go up through the radiator and down underneath to the air filters.
The air filters are in front of the sway bar and will be sealed off, guiding the air flow and keeping debris and such from the tires getting up in there.
The splitter will create down force at speed, seal the air box on the bottom side and help direct airflow under the car.