Brake and Fuel Line Diameter

vdk2010

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I'm in the middle of ordering all the tools and supply to completely redo all the brake and fuel lines on my 1969 Imperial and I ran into a lot of different line diameters.

I'm unsure what size to use for both fuel and brake lines... :confused:
 
Stock fuel line would be 5/16” and pretty sure 3/16” for brake lines. Anybody else confirm?
 
I guess it won't hurt to install 3/8 fuel lines instead if I build everything from scratch anyway, right?
 
Still going to have the 5/16” supply from the tank if stock so larger fuel line will not net you any benefit.
 
And larger diameters are tougher to get sharp smooth bends in if you are bending with one of the typical hand-benders. Tends to wrinkle/crinkle/crush.
 
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