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
Sintech USB 3.2 Type C External Case, Compatible for 28Pin SSD from MacBook Air(Mid 2013-2016) and MacBook PRO(Late 2013 - Mid 2015),Support nVME SSD if with M.2 Card ST-NGFF2013 : Amazon.ca: Electronics
MacBook Pro 13" Retina Display Late 2013 SSD Replacement - iFixit Repair Guide
Upgrading 2013-2015 Macbook Pro SSD to M.2 NVMe | MacRumors Forums