I bought the Marlin fuel lines. The yellow plastic pipes etc.
I have joined the front and back rubber fuel lines using the yellow plastic one's Marline supplied. It's a tight fit. But do I secure with jubilee clips. Was not sure as I did not want to crush the yellow pipe.
I agree, the yellow hoses have a very small bore. Under heavy acceleration they might restrict flow. I got another set of nitrile lined rubber and used a length of the yellow hose for my brake servo...