For sanitation hose, I used Saniflex Odor Shield and Trident-Premium. For tank vent, I used 1/2” Shields 1350HD water hose which looks like common fuel line. The original clear hose had deteriorated, and I figured “water hose” should be okay as it should never carry liquids.
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Removable cover is supported by new cleats which are attached by the screws shown. Original cleats were attached from below and prevented removal of the tank.
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An elbow was installed in each of the bottom-connected hoses to make installation much easier, and to minimize torque on the elbows at the tank bottom which could result in leaking. The webbing straps attach to a webbing belt a few inches below the top of the tank. That made installation and test-fitting of the tank much easier than without.
I recommend that each screwed fitting be sealed with teflon tape followed by pipe dope such as Hercules Megaloc 15804.