lol kuji... also you may want to look into the original fans on the japanese model DC... they were built out of metal and not plastic... they were also slightly quieter (even though my USA console was pretty quiet...)
I managed to silence my old skool Xbox by swapping out the cooler with a silent 80mm fan, but would like to give it a shot on the DC one (I find the fan background noise distracting). This one looks close to the size, although 3mm thinner http://www.frozencpu.com/products/5...07M05CA.html?tl=g36c231s598&id=wUnpJgBM#blank
I did that too with mine. I put a blue led fan with a control switch on the back it was pretty cool back then.
I have a Japanese DC, and it uses the same fan as the US DC. It might just be launch DCs that have a metal fan.