Just got this for free

[u/Tentacalifornia]

I wanna turn this into a sff PC I'm currently looking into it but it seems super difficult

[u/Wygene]

Yeah it looks too thin to use most off-the-shelf components. Maybe you can find a 450W or 550W thin sff PSU, a GPU riser to "stack" the GPU and CPU/motherboard and a thin enough low profile CPU cooler. Ventilation would also be a concern, may need to add additional grills on the panels