What size fuel line is absolutely required?

QFT are making great pump but ounce again the price is there !

HOLLEY are making the gerator pump but as I know they dont last for long !!!Holley HP Series Fuel Pumps 12-125

there is one a little bigger but it have the same problem of longetivity so...

magna fuel , QFT , WELDON are the way to go but money arent falling from
the three where I live so ...

for me waiting a little and gonna do it with the QFT 230 with #8 line
http://documents.holley.com/99-30-230rev3.pdf

my 2 cents
Been using the edelbrock 160 for 10yrs+ now. 0 issues.