Today I decided to enlarge the fang duct. I used a Dremel to cut out the remaining parts of the opening. It doesn't look too bad.
I'm going to research vents for the fender well cover. My fat tires already shredded a tiny portion of the cover. It'll be nice to get an after market one that's a bit stiffer with vents. Do you guys remember the preproduction 370Z? It had vented wheel well liners. That's something I'd like to get my hands on:
Here are pictures of the enlarged fang vent:
