Fooking for a '72 fuel tank fuel line and vent line routing diagram?

[Phyregod]

I'm looking for a diagram that shows where all the lines from the fuel tank go in the truck. I have three that go below the floor, I assume fuel line and vents, but there are also two that go up into the roof? Where are those headed? Does anyone have a routing diagram that shows how these are routed in the truck?

I have the tank out and I'm replacing all the rubber hose pieces, and want to make sure all the other ends are connected where they should be. Thanks.