Yeah do need to get one, would allow better air flow, i do like the quick release drive bays though, no screws, jus slide in and slot the clips into the screw holes, then when its time to take them out, twist and release! its great very quick and easy and stil holds things securely.

Need to get a fan for the top to blow air over my memory and then cathode tubes to shine light through the many holes and an eerie glow from underneath (i will place one outside the case on the bottom for that cool effect)