Um... Copper? Like, refrigerator water line for the ole ice maker?
Please, use REAL brake line. With double wall flare. And proper steel fittings and unions. AND NO COMPRESSION FITTINGS.
You can buy lengths of pre-flared lines and unions at your local auto parts places, if you don't want to make proper double wall flares. Just take your time and don't kink the line as you make bends. Follow close to original, and make sure it is secured as you go along. You don't have to follow exact.
Where are you from?
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