Don’t throw away any of that Smog Stuff.
Lots of people trying to restore old Broncos, and are now driving them in states that have smog inspections. Some of the parts are easy to get, while some are hard to find.
And if it’s all still original under the hood at the moment, take lots of pictures on how everything is set up, including vacuum lines, so that would be restores have a little point of reference.