Okay, I am going to go and test this theory about the vent being there for cabin pressure.
I am pulling out my roll of duct tape, covering up that hole.......and taking it for a spin.
Will post the results for wind-noise\cabin pressure\closing doors\sunroof.....
If it really is that big of a deal, I will just be relocating the vent.....the tailgate will be shaved!!
