What size fuel hose?

[dnb]

For a 5 litre v8 producing (hopefully) 350+ bhp?  Fuel pump is a Bosch 044.
I am looking at either -6AN or -8AN from Speedflow.  Or even -8AN feed and -6AN return.  The price is no different.

[Team_Dandism]

I use -6 feed and -6 return, but many use -8 feed and -6 return for 350bhp, i'd be going the -8 feed route.

[dnb]

-8 it is then.