you could extend cables out from optical bay door and put psu on top of the machine.
side panel would still be the problem.
do you have standard pc card or have David flashed it ?
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Margus
http://iconstudios.eu
DaVinci 8.2.1 OSX 10.7.3
MacPro 5.1 2x2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro