I need information on 2008 subaru impreza brakes systems for a Class project(High Performance Vehicle Engineering). I am interersted in information on stock equipment of the car. I need:
-Rotor weight
-Caliper type, number of pistons, and piston diameter
-Brake pad surface area. and coeficient of friction numbers if thats even possible (ill probably guestimate an assumption for that)
-Master cylinder piston diameters,
-pedal ratio,

If anyone can help me with any of these numbers I would be greatly appreciative, Its hard to find specific tech numbers with out the service manual. Parts sites dont ever give that kind of specs.
Again thank you for any help