'71 Jimmy Gas Tank plumbing & venting

[DC_Jimmy]

Finally taking a look at fuel lines on '71 Jimmy that's been sitting up way too long. Has a newish replacement gas tank in it, no idea if appropriate tank model - truck has lots of lazy hacks on it from previous owner.

Did the '71 originally have a charcoal cannister? If so, would you add back missing cannister?

If no cannister, should I rely on vented cap or run vent line(and terminate where?)?

What is proper method of capping the unused fuel return port on passenger side of tank?

Thanks for all your expertise.