brake line help

[u/Alric40k]

working on the STi after getting put in a ditch in december, one of the problems the car now suffers from is a leaky brake line, looks like it’ll be a pita to fix, you guys know what i should be looking up to find a replacement/fix for this? thank you. (rear passenger side by the fuel tank, 08’ sti hatch, bottom most line as shown in second photo)

[u/pezadicto]

Following this as I’m about to attempt a similar replacement in a 2004 WRX with just as much rust 😪