Best way to vent fuel tank?

Read up on the how-and-why of that '70-'71 4-port tank setup here. Then vent your tank with a charcoal can (info in link) unless you like smelling gasoline wherever the car is parked.
CHRIST here we go AGAIN. The 69/ pre evap systems worked just fine AND DID NOT SMELL in the garage any worse than your uber green "carbon(sh*t) can"