Upgrading the brakes on my 04 ZX6R. I'm putting on a Brembo MC and was wondering if I should still use the 03-04 brake lines. I see most companies offer 05-06 lines but not the 03-04. Can anyone tell me the differences btw 04 & 05 lines? I believe the 05 came with the radial MC but not sure if that is the reason for the different part numbers.