1st answer...the rear rotors will rust if left untouched. Heres what I do. Put the new rotors and pads on the car, go out and break everything in, come back while the brakes are still warm and take the wheels off, hose down the caliper and rotor with brake cleaner, and then paint the whole thing up with caliper paint. Let it set for about 10 minutes and then put the wheels back on the car and take it for a ride. The caliper paint wont peel and it'll look good for ever. If you want me to paint them for you, I have a huge oven at the shop to cure the paint, just let me know.
2nd answer, your stock calipers will work fine with these rotors. Put on my pads as well and they will work even better.
