No tutorial as I've done this particularly build a few times now. It is my favorite. Restoring my RoninDojo on this one but I have the same build for Umbrel, too.

Rpi4

Crucial SSD (SATA)

Geekpi DC 5V / 4A power adapter

Geekworm X825 board for the SSD

Geekworm X735 board for fan and power management

Geekworm X825-C8 metal case

Only hiccup this time was I didn't realize the v2.0 versions of the X825 and X735 boards were decently different from the v1.X versions. It was mostly self explanatory what to do though..fewer wires which is great.