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4 months agohttps://www.coolermaster.com/en-global/products/NSE-400-KKN2.html This is sub-$200 CAD, and has an absolute ton of drive bays, including a few 5.25" because it looks like you still have an optical drive in there. It should also be big enough to fit that GPU.
That’s basically a Home Depot that also gives out construction plans for stuff…