cephraim -
Looks stealthy-good. You scored with a nice dark colored styrofoam.
It seems like you could "add louvers between louvers" on the grill and maintain the overall look. One nice thing about a new car is that you can use it as an excuse to *take* *your* *time* to plan out a really clean mod.
When I look are your grill, I keep thinking of the Ford Fusion grill as an idea for "wider grill, narrower gaps" :
CarloSW2