Something that caught my eye is that the Z proto front bumper honestly looks similar to the Stillen front end.
I am willing to bet that the side "pockets" or "crevices" of the Z Proto will become side vents. Imagine if they were able to create a "tunnel" that led to the engine bay into the intakes from the side vent or to just help with cooling in general.
Then just reshape the grille, change the bottom lip to black,and add a body colored design that is
recessed in the grille so that way it doesn't look strange from the side profile but changes the front view.