What do I need? The setup... It has come time to replace my rotors and pads. Which means time to upgrade. I want to get the Baer 12" front sport kit. I figure I can do the drum to disk swap later down the line. My dilema... my booster hisses while I step on the pedal so I want to replace that as well. Can I just replace the booster with the stock piece, or will I need something more since I plan on doing the rear disk swap later? The front kit comes with a new master cylinder. Will I have to replace that when I do the rear? Thanks for any help.