This Jeep has no emission components on it. What would be needed to get the vapors from the tank to the intake?
Unfortunately I don't think it's that simple. If you just ran a vent line from the tank to the manifold vacuum, then that would cause all kinds of problems that would stem from the engine sucking in air from the tank which would amount to a vaccum leak as far as the engine was concerned.
Plus, the factory charcoal cannister also connects to the carburetor's bowl vent so that gas evaporating from the bowl has somewhere to go.
So then you start to get back to the factory-installed setup of a charcoal canister and the pressure valve that's in there.
Maybe someone could design something inbetween a single vent line and the factory system, but I don'tknow.
I can understand why people remove the emissions control hardware from old vehicles, but I think it's unfortunate. I think it stems from a lack of understanding about how the things work and what the components are designed to do. From the point of troubleshooting a poorly running vehicle, I can see how a person would want to rip out stuff that's not really essential, but personally I like to leave in place systems like the cat and the charcoal cannister because they generally operate trouble-free and have little impact on performance. I remember removing my computer and all of the related hardware and wiring and it was a satisfying experience, but I also remember going over the remaining vaccum and vent lines and being happy to know that the necessary plumbing was in place to keep things running well and as clean as possible.
If I had a CJ with no charcoal cannister, I would probably get the thing running right as-is, then plan to add the cannister and related plubming later if I could find the parts for a reasonable price.