Need some help for replacing brakes. I have a 02 Impreza 2.5rs first of all. I would like to put new rotors and pads on. Went on to different websites and saw that they only have Cross-drilled and slotted for the front and none for the back. I want to know why that is? I just want better brakes for the car. I don't have any mods on the car. Any information will help.