Eagle towers are converted AT towers.. there will be tons of drilled and tapped holes that arent used. this is normal,dont assume its junk,unless someone went nuts drilling more holes all over it.
eagle made some fine towers with tons of expansion room,and they housed every/any accelerator usually without interference,unlike the pain in the butt real AmigaTechnologies a4000t's. most eagle slotboards had 2 video slots and i think 7 zorro slots, i still kick myself for selling my eagle long ago.
Oh,and when you power the cyberstorm ppc up,be sure the ppc fan is working well,if its not it will cook itself.
nice find there!