I have created this model to fit a base module of my Midland M-5 CB radio under the passenger seat. M-5 has all the controls in the mic piece, so I was able to hide the rest.
M-5 is fairly small (barely ~12 cm width, less than 14 cm with the install frame), hence I was able to fit it between the bars of the lever.
Using a 1 m long Ethernet cable I was able to route the mic back and then forward again between the seat “rail” and the central console, so it won't get into the way when adjusting the seat.
The author marked this model as their own original creation.