I'm looking to buy a spool of hose to replace fuel lines in several
vanagons.
I know I need 12 feet per bus and 5/16'' hose is suggested and i've used it
before (I know, 7mm is better, but good luck finding any).

What Pressure rating do I need?
50psi seems to be a common rating and that 'seems' to me to be sufficient
but this is why i'm asking.
Does anyone know where I can get a spool of good fuel line or at least what
pressure I need to deal with?

Thanks!

-Craig