. . . this got me curious, so I took a look under my GMC (which is 4wd) & followed the vent line up, & it clips to the plastic fenderwall liner up about a foot or so above the frame rail. It is actually NOT wide open toatmosphere--it has a small cylindrical shaped capsule on the end of it which I am kind of assuming is sort of a 1-way check valve designed to vent pressure but not allow contamiants in (the rear diff has the same thing). That may be a GM thing, but you could check with your Dodge dealer parts department on that. And I would think you could secure that vent line almost just about anywhere that was high enough (excluding moving parts like your hood).