Building A Password Cracking Rig

I've been wanting to do this for a while now, and I finally got around to it- I'm currently in the process of building a password cracking rig! I had a couple of different options where chassis were concerned, and initially I wasn't sure if I wanted like a baker rack/open mounted kind of concept, or something contained, but ultimately I opted for the full tower you see pictured here. I wanted something that could be sleek and relatively portable (although I don't really intend on deploying it anywhere outside of my home) if nothing more than for the sole reason of the novelty of just having a cool tool like this packaged up in a neat little box, as opposed to having everything splain out in the open. I began by removing all of the cages that were inside of the tower by using my dykes, my drill, and the power of friendship! ...Anyways.. After removing the hard drive and drive bay cages, I started to see the beginnings of my vision coming to life and now started to speculate on how I might be able to somehow fit these 6 GPUs inside this newly gutted tower.