I know that we can buy the big brake upgrade kit, but what I am wondering is why couldnt I look at a salvage yard for all the components to do it cheaper and in phases. What I am wondering is could it or would it even be possible to find the rotors calipers and then buy new pads and start by just changing out the rear stuff. From what I understand I should be able to run the bigger calipers in rear and then the smaller ones in front until I go to do the fronts. Or do I have this all wrong and they cannot and will not work together? any suggetions of comments will be accepted.