[Kracka]

Powerslot rotors would be your best bet for OE sized replacements. Otherwise, you can get AEM's upgrade kit which includes larger rotors and brackets to make the stock calipers work with the larger rotors. If you were looking to get a complete big-brake kit the Baer Track-Kit is pretty tough to beat with 13" rotors when it can be had for ~$600.

A good decently priced setup would be Powerslot rotors, Porterfield R4S pads, and SS brake lines.