Hi guys , I am driving an e39 523i and i plan to install e39 530i front brake into my car which i can get it at a resonable price . My question is 1 . Is the 530 brake direct fit into my 523 .2 . How about the ABS sensor ? Can i used back my old one . Was wondering if anyone of you have done this to their ride and how is the braking improvement . Thanks .