Too many vent lines?

[Nickaru]

I'm helping my friend install a FASS fuel pump setup on his 2004. 5 Dodge, he recently acquired. The standard fuel pump is in the tank and we have modified the tank for the fuel pick-up for the FASS pump. On the enclosed pic, there are two white fittings and a black fitting on the other end of the tank that had no hoses attached when the tank was dropped. We looked for any hose that would have connected to these fittings, but none are in the area.
Does anyone have any idea what they are for? At first, we thought vent lines, but three?

 

[Bob4x4]

No worries just vents but you might want to put some hose on the to prevent tank contamination under extreme conditions

 

[LNaugle]

They are vents and dodge makes a system that connects to them and extends line to a place that doesnt get as much road debris... Consists of rubber line and a tee and maybe an actual vent cap like the diffs have. I dont think they made it for no reason actually intended to be installed with their secondary fuel filter system. i would build my own as the dodge price will blow your mind for what you get!

 

[JJPage]

I just shoved a length of hose onto mine, about a foot each... and stuffed them up under the bed cross braces, while the tank was in place.