Hey Jeff,
This helps a ton! It looked to me like the hose in my first post was supposed to go to the air filter base, but the base I have only has the one nipple for the oil filler cap hose. There is a flat-ish area of the air filter base underside that would be in the hoses general area. Could this be where the hose might have alternatively attached, if the nipple was installed?
Also, I found this picture below. Did this hose ever get “spliced” into a vacuum hose at the back of the intake?
And, I found out that air blows out of the hose upon acceleration; which would force air into the smog air filter canister, air filter, or whatever else for which it’s connected.
Finally, did I read correctly that the smog setup on a regular Mustang was different than on a Shelby?
Thanks!!!