Mine is very much a full tower. As in, 'set it on the floor beside the desk, and use the top of the computer for an additional 5in of deskspace' tall.

Room for a full size AT board, 2 PSUs, and a cooling block.

Edit:

This offer looks 'doable' if a bit inconvenient where they put USB and HDMI connectors.

(This is the '5in' sub-offering for the amazon listed item 'hoysond 7in display' for raspberry pi)

121.11 mm = 4.76 in, which is plenty for a 3D printed bezel, and for 90deg breakouts.

A suitable low profile 90deg hdmi breakout

There might be room vertically for some volume pots for internal speakers.