Identify those brakes

Hello, I recently bought a 78 280z and it came with a rear disc conversion installed.

Both my rear lines are kinked and leaking and i am trying to identify which kit it is and where i can source 2 braided rear lines.

By searching around it looks to be the silvermine kit. The mounting bracket looks like its theirs. the caliper looks like the maxima caliper.

I would like some confirmation from those that have more experience since i am a newb in the z world and its upgrades.

I have looked at various sites and they all sell the kit, but none sell the brake line alone.

Thanks