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'larger hose' ...?
I just had an 84 tank in and out ..
and have done many 2WD vanagon fuel tanks.

normally I don't think there any 'large hoses.'
What is stock is a plastic line across the top, joining the plastic gizmo's that plug into the grommets in top of the tank. That cross-over vent/ evap line is about 5/8ths inch in diameter.
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Going across the top of the tank, and split from one of thoes T’s, are larger hoses on my van.. I’ll try to dig up a picture when I get back from camping.
Thanks,
Bryan