Fuel vapor system

Thanks 67dart273. I took delivery on this car from the factory. It never had this system. I have had the gas tank off a couple times through the years. The only opening in the tank is a 1/4 " tube from the front of the tank up high. This is the one I was referring to in original post. My filler tube is without openings or fittings. There has always been a solid metal plate in the trunk where the manuals show the canister would be. It seems I could get a long piece of /4"gas line and run a loop high and let it end. Only problem is that it would all be outside the car. Any thoughts?