Is that a real PCV valve hidden under that giant hose going to the passenger side valve cover? ;D
Might be, but it's hard to see. Which might mean it's not been replaced in awhile either. Wouldn't hurt to check it out and see if it's clean and newer looking. If not, they're cheap to replace.
The method of "adapting" the hose could lead to vacuum leaks though, so make sure it's tight, or figure out a better way.
Check your distributor plumbing too. Looks like you're still equipped with the old dual-diaphragm vacuum timing thingy there behind the carburetor. It needs to be connected to specifically routed and controlled vacuum hoses, which it doesn't appear to be from here.
If you can't find a vacuum diagram for it, you may just plug off all the extra ports, and use only the single advance port (usually the front one on the distributor) plugged into the timed-vacuum source on the carburetor.
Of course, you did say it ran when you got it. So maybe it's best to leave well enough alone in some cases. But if it's not running quite perfectly, some or all of those things may have something to do with it.
Paul