Fuel Tank Vent Line
 

Ok i finally got the s14 on the road yay! so i still havent even touched the fuel vent hose. So the red circle is the hose i need and just for clarification this nipple is the vent for the gas tank that snakes a hose to the fuel filler neck correct? Nothing else is routed or t'd into the hose? And also what size would i need? Like i said there is not a hose there despite the previous owner sending it to a shop to replace the leaking gas tank i cant fathom why they would even leave a single hose off like this... it vents fumes right into the car and that is a big nono especially when the windows dont roll down.