Here is what I used. Sander is about $30 at harbor freight plus the belt. I found an open box for $14. Even with that crazy belt it would still melt the plastic some and you'd have to peel some away. By pressing hard the sander will get some work done, but it still takes awhile.... Then using a blade I had to trim out every hole's edges to get it presentable.
-note- I tried a regular random orbital type sander and it barely did anything so I really recommend a belt type sander.
I just used a flat head screw driver and carefully pried back the tabs of the grill and pulled up around the edges of it. If you look closely it's easy to see how they work.
I have tried a couple different ideas on scoops for the cold air and ended up butchering my shroud in the process, but will pick up another one later.
Here is what I ended up with. It's half the stock scoop and I used the other half On the other side. I have something else in the works that I will be bringing to market eventually most likely.
Tried a whole stock snorkel but it wouldn't work with the plastic piece that goes over it connected to the bumper. Was perfect otherwise though.