jaybert: yes it is possible. You can get the extra cage and holder from Antec (should be in the $20 range) and then just tap two holes and pop in some rivets. If you can't rivet, you should be able to bolt the thing in with the bezel off. A worthwhile idea if you need the extra drive space. But if you are stacking in that many drivers, the old 300 watt power supply might not be strong enough dependant upon what those drives are and what else is in your system. I'm stressing the word MIGHT.