[Christ]

Dean - The gap in the Lund visor is actually worse for aero /because/ it allows air to pass, but not in enough volume to make up for the drag the part itself induces. It'd be better as a sealed unit, but the tiny screws in sheet metal wouldn't hold up to the wind pounding, which is why those vents are there.

If you do decide to use a visor, go with something like a short-tuck style, seen on many large trucks. The front visor is just a no-win situation.

Also - Fine. I'll sub this thread too.