[Roadsters] Fuel lines

[Tim]

While inspecting my hoses yesterday I noticed something I am curious 
about...

The fuel line from the hard line to the filter is 1/4" and the line from 
the pump to the carbs is 5/16.

In looking at the pump, the inlet fitting is bigger than the outlet 
fitting.

I will be running 40mm Webers soon.

What size fuel lines should I be running now with my SUs and later on 
once I install the webers on my stroker?

Thanks!
tim