How to install an SSD on a 15-inch Retina MacBook Pro
Amazon.com: OWC 2.0TB Aura Pro X2 SSD Compatible with MacBook Air (Mid 2013-2017), and MacBook Pro (Retina, Late 2013 - Mid 2015), and Mac Mini (Late 2014) : Electronics
SSD upgrade on MacBook Pro 2014
MacBook Pro 13" Retina 128GB SATA SSD Solid State Drive, Late 2013 / Mid 2014 - 661-8135
Amazon.com: OWC 1.0TB Aura Pro X2 SSD Compatible with MacBook Air (Mid 2013-2017), and MacBook Pro (Retina, Late 2013 - Mid 2015), and Mac Mini (Late 2014) : Electronics
Upgrade MacBook Pro to NVMe SSD | MacBook Pro Retina SSD Upgrade | 256GB to 1TB NVMe M.2 | Mid 2014 - YouTube
SSUAX SSD For Late 2013 / Early 2014 MacBook Pro Retina