sounds interesting. are you going to post a mod guide with pics of your mdd?
i am curious to see your machine.
i never had the idea of using the mirror doors as air intake smile

btw. if you wanna fit a heatpipe thinggie or a silent cooler to your 9800, you may need to move your optical drive to the lower bay in order to get enough space by chop chop the upper one...

the 9800pro-underclocking issue sounds bizarre. sure you tried downclocking aiming at lower temps to run it without coolerfan...

please keep us updated. 

greets from curious chris (the unreal one)