After doing quite a bit of searching over on Expedition Portal and some Austrailian forums on controlling dust, I purchased this recommended all-aluminum vent. Here is where I mounted it and how it turned out. First test this weekend but driving around the street it should work very well. I may put a Uni foam ail filter on the inside if it lets in too much dust but with its placement as high as I can get it and on the passenger side, I am not anticipating much of an issue. The Uni frame/filter will be a very easy and low dollar solution if necessary though.
