Wife took the car to work today, commute is mostly city + a short bit on the highway (accelerating up an on-ramp and slowing back down again for an exit in 2 miles), and she blasts the A/C. averaged 61.8MPG round trip which is a new record for her, usually she's between 48 and 55MPG. Possibly a result of leaving with a full battery.
After she got back, I fixed the belly pan and modified the upper grille block with a flap, to block more air and get rid of the gap-toothed look. I used the stock mounting holes with push clips, bolts, and zip ties.
EDIT: Presently resizing all images in the thread to be more reasonable.