I bought a set of front and rear Eradispeed rotors and installed only the fronts. I didn't have the 12mm hex socket needed for the rear rotor install and have tried every hardware store in search for it. During this time, I decided that I really don't need the rear rotors.
The rotors are in perfect condition and include everything needed to increase the size of the rear rotors. This is the +1 kit (two piece) that stores like TBryne and Thunder Racing sell for $599. The rotor size is 14". I am selling the rear set for $400 plus shipping. I live in CA and can arrange to meet a nearby buyer.
Here's a link to the manufacturer website for more info:
http://www.eradispeed.com/eradispeed02.shtm