Venting...

69 Dart with this tank
1967-70 Dodge Dart / 1967-69 Plymouth Barracuda Fuel Injection Gas Tank
And this filter/regulator. If I remember correctly the filler tube on our car has a vent line of sorts. Pump that I will be using has a vent...looks like the tank has a vent...guessing a non-vented cap will not be a problem?