MacBook Pro 13" Retina Display Late 2013 SSD Replacement - iFixit Repair Guide
Amazon.com: Sintech M.2 NVMe SSD Adapter Card for Upgrade 2016 2017 13" MacBook PRO A1708 Non-Touch Bar Models(Only For Late 2016-Mid 2017 Year) : Electronics
1TB SSD Kit for Mac Pro - Apple
Touch Bar MacBook Pro models have non-upgradeable SSDs, seemingly under-sized batteries - 9to5Mac