How to install an SSD on a 15-inch Retina MacBook Pro
MacBook Pro 13" / 15" Retina 512GB SATA SSD Solid State Drive, Mid 2012 / Early 2013 - 661-6487 661-7010
MacBook Pro 13" Retina Display Late 2012 SSD Replacement - iFixit Repair Guide
MacBook Pro 13" Retina Display Early 2013 SSD Replacement - iFixit Repair Guide
Amazon.com: MCE Technologies 1TB Internal SSD Flash Upgrade for MacBook Pro Retina (Mid 2012 - Early 2013) - Includes USB 3.0 Enclosure for Original Drive & Install Kit! : Electronics
MacBook Pro 15" Retina Display Mid 2012 Teardown - iFixit
Amazon.com: Transcend 240GB JetDrive 725 SATAIII 6Gb/s Solid State Drive Update Kit for MacBook Pro 15" with Retina Display, Mid 2012 - Early 2013 (TS240GJDM725) : Electronics