Broke my brakes

I just bought my 77 124 sport and i love it! However, I was replacing the front rubber hoses yesterday, and I must not of been paying attention because i twisted the metal line on the driver's side, and now it leaks.

So I'm wondering a few things:

What flare do these cars use?
What size is the fitting into the flexible hose (the side without the banjo bolt)?
Is there a place that'll sell me just the tube nut, or do i need to buy a whole new line?
Where would I get the line?!?

Sorry for all the questions, my other projects have all been VWs so I'm kinda used to parts basically falling out of the sky...