Damn, that's a sweet case. But what, 48 drives aren't enough for you? :)

I'm assuming you'd cut out the rear fan area to make room for this? Do you have open PCI slots that something like this would work...

https://www.amazon.com/Syba-SY-MRA25023-Slot-Mobile-Black/dp/B0080V73RE/ref=sr_1_5?crid=1N50M8XX4ZCYG&keywords=pci+2.5+hot+swap&qid=1661914756&sprefix=%2Caps%2C133&sr=8-5

Although the case seems to only have 7 pci slots so you wouldn't get the 8 drives you're talking about. I do see they have a 2 drive option off to the side there. Again, not the 8 drives. But, maybe you could stack a couple of 2x drive bays in that area and not have to swap the CPU heat sink. Something like this...

https://www.amazon.com/Kingwin-Tray-Less-Backplane-Enclosure-Performance/dp/B00475DQ6Y/ref=sr_1_3?crid=2RY35RMMJS6&keywords=2.5+hot+swap&qid=1661914808&sprefix=2.5+hot+swap%2Caps%2C245&sr=8-3

Just some thoughts for other options.