You could probably fit something inside the chassis, but why? It doesn't have standard mounting hardware for any ATX form factor, you'll need to source a slim PSU, and at the end of the day, without a ton of effort to make the build work, and additional thought put into the cooling (etc) you're going to destroy a working console for a pretty average result with a lot of trade-offs.
TL;DR, bad idea. You can do better.