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
SSD Upgrades for 2013, 2014, and 2015 MacBook Pro
How to install an SSD on a 15-inch Retina MacBook Pro
MacBook Pro 13" Retina Display Early 2015 SSD Replacement - iFixit Repair Guide
How to upgrade your MacBook Pro with an SSD - CNET
Replace your 2009-2012 MacBook Pro HD with an SSD
MacBook Pro 13" Retina Display Early 2013 SSD Replacement - iFixit Repair Guide