Fuel Line size

[tvrmk363]

Good afternoon gents,

I was messing around over the weekend and fired up the 350i. I smelled heavy fuel smell which wasn't two unusual because it does run a bit on the rich side. I looked below and the fuel was pouring out like a sprinkler head. Time for a replacement from the fuel pump forward.
What are the sizes of the fuel hose? I might try to replace with metal except for the couplings at the pump and regulator. Has anyone done it and what did you use?

Any help would be appreciated.

[tvrmk363]

Is there a reason for copper v steel? Corrosion maybe?