This mod, made out of an old little black box just goes to prove that modders go through a lot just to get the desired result. This particular modder risked lung cancer just to get his cool new PC.
The inside is actually quite small, since the inner metal box is completely surrounded by a very thick layer of asbestos. Which means he was wetting it down occasionally in an attempt to keep bits of it from floating down into his lungs.
The inside is so small that only a Mini-ITX motherboard with a 800MHz Via C3 could actually fit. The Crashproof File Server Case Mod is also running Slackware Linux as its OS of choice.