64-66 Chevy Oddball Cowl Vent Identification Help

[paulspickupparts]

Was out parts hunting and ran across this 64-66 Truck . I have been around these trucks for a while but have never ran across anything like this. Just to the left of the brake master cylinder was a extra cowl vent. It has a flex tube that extends to a couple of brackets just behing the radiator support. Whatever was held by the brackets is gone.

Not sure if this was Farmer Browns invention or not. Whoever did it took enough time to install a GM wiper bag on the passenger side for wiper fluid as whatever was held by the brackets would have interfered with the original location of the wiper fluid tank.

Here are some pictures . If you have seen anything like this would be interested to know if it was original or a farmer add on. Truck was pretty loaded with other options so kind of odd. Thanks