Ok, so I have a few days off and some time to dig in more. I got out my original service manual, and I also have the original complete intake system. Pics to follow.
As far as I know, that is the actual, original system that came with the truck. Looking at the air cleaner housing, there are no ports for valves or flame arrestors.
Then, looking forward of the old 2bbl carb, you can see the open, vented style oil filler tube, and the original PCV valve at the back of the carb where that elbow is.
Further, looking at my manual, that picture shows the identical setup to mine.
So, I am unsure any other way I should be hooking this system back up, other than adding in an in-line PCV valve right before the hose connects to the large manifold vacuum port at the bottom back area of my Holley carb.
Am I missing something?