Fuel line question

My 71 Challenger has exactly the same ECS line (Evaporaive Control System). It didn't run a charcoal cannister, it had 4 vent tubes from each corner of the fuel tank all going to a riser in the trunk. Also coming off that riser was that line you see going to the eng bay and ending opposite the RHS of the engine on the inner fender. From there, it either had a rubber hose going to the rocker cover breather cap so that PCV system could recyle it OR straight to the ECS of the carb (i can't remember which now). That carb was the factory 2barrel Holley. JUst plug that line up, but you will need to vent the fuel tank with a vented cap, is the easist way.