Is the fuel line I need for my bus with Fuel Injection pretty standard?

The fuel line is wet when the bus has just been running at a spot where the
plastic hose meets a rubber hose to go through the fire wall into the engine
compartment over the starter motor. It looks like there is plastic line from
the fuel pump to a rubber hose to a fitting that passes through the firewall
and then again attaches to some rubber hose to the fuel pressure regulator I
would guess.

I'm guessing the rubber lines are 5mm "high pressure" hose. As for the
plastic lengths will I be able to find that at a local parts store? (My bus
is an 83.5 Westy).

I think I may have time to order the plastic line from a list vendor since I
think it's length of rubber hose that's leaking--and I think Ken sells a kit.
But info on the rubber hose will be much appreciated since I have no real
experience with purchasing FI fuel line  and haven't found a knowledgable
parts store in this area. (Burbank, CA)

Thanks
Jeff
83.5 Westy