It looks like you have pre fabbed/crimped 3an lines

So your banjo 3an bolts leaking, you just need new washers for the banjo bolts

The lines if you are happy with the lengths then yes replac them with pre fab lines if you want, or make your own.

The only thing to note, those lines don't have a heat shrink sleeve/coating.

If they make the same lines with the coating ur good, if not I would recommend buying bulk coated (black) line and 3an fittings and make them yourself