Hello guys, I know this topic was discussed over and over again, but I'm building my own braking kit with some Porsche Cayenne callipers so it would be very handy if someone who already has this kit on his car could give me a piece of advice. I've already built the adapters, I have the discs, but I don't have and I don't know anything about the brake lines. What inner diameter should it have? I've found something from Goodridge, but are different diametres 3.2mm and 4.8mm. Also, I'm looking to buy 4 meters, I think it would be enough? The fitings that go into the caliper, what size, and also, what size shoud be the fiting for the other end of the brake line?