New Old Brake Line

When I bought the bike last year, the previous owner had rigged up a stainless steel brake line with bango bolts that went from the MC slug directly to the the Caliper bottom input line. This arrangement seemed to always leak, and it was missing the steel down tube. I found online the original assembly from the caliper all the way back up to the MC, original ATE brake line and bracket. Now I do not know the age, but the rubber hose looks ok, and the brake stopping seems solid. I might get a new brake line at some point, but I wanted to put the original lines back on.