They do offer that type if you desire one.
The few I have used didn't require a vent nor did they need one. If you want fresh air, crack the window a bit and drive faster.... :burnout: L.O.L!!!
Actually, I am considering on making one at the old locations and fabing louvered doors that I can open or close as desires. The wheel well is a great location since your cowl vent has been deleted. I almost deleted mine but decided that I like the look of them and I don't ever plan on parking the cat outside for a long winters nap nor under a tree, so I don't need to worry much about debris jamming up the drains and rotting them out as they were when I began the rebuild.