How to install an SSD on a 15-inch Retina MacBook Pro
Amazon.com: 512GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
MacBook Pro 13" Retina Display Late 2013 SSD Replacement - iFixit Repair Guide
Hard Lesson Learned With Late-2013 Apple Products Containing Lesser Performing 128GB SSDs | The SSD Review
How to install an SSD on a 15-inch Retina MacBook Pro
Apple MacBook Pro 13" Retina A1425 (Late 2012 - Early 2013) - SSD 256GB | Fixshop
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