With? without vent holes?

[SmashingPunkFan]

On the fuel tank, what is the difference? with or without vent holes? and how could this affect my application?

[Chryco Psycho]

70?
after 70 all cars had non vented tanks & the fumes were burned through the PCV system , Cali had different emissions from everywhere else in the world , it depends how you car was originally built which tank you need

[SmashingPunkFan]

It was originally a 318 SE, but Im making it a 440 
I have the original tank, but its got rust holes through the top

And fuel lines, what size should I be using?

[Chryco Psycho]

If you are replacing the lines anyway I would go to the 3/8 line .