I have a 528e since I needed to get new brakes, so I got a set of bmw brembo from an 8 series. They are the 4 pot kind. I was wondering for the brake lines would the 528e lines by long enough or should I get the 88 m5 brake lines since they seem to be a bit longer, or if I should get e34 5 series brake lines. I am going to also swap the back to 540i brakes. Any suggestions would be great.