Well at first I was like… what a waste of perfectly good case for some industry design, but then I noticed the HUGE heatsinks into the 5 1/4' slots and I realized that this is perfect cooling solution (I bet there is a fan(s) in front intake(s)) and that the case is quite suitable for such things, except the weight of this thing is gotta be huge. Just the toroid transformator at the bottom must be quite heavy.
And the five huge heatsinks seems that need to be supported by the added aluminium rod, so... that must weight a good 15kg at least.
Still congratulations to the builder. It do looks nicely and cleanly inside. Interesting use if PC hardware...