If i had a 360 i really wanted to live longer i would use one of these:
http://www.psxcare.com/product.php?xProd=1119&xSec=89
and put the 360 drive that i have "Flashed and all " in it and not having any drive in the J-tagged 360 unit at all.
then i would change the polarity for the fans so it takes tha cold air from outside and press it inwards instead of from the unit and out. And like the guy on the external link make a new fan tunnel so it separates GPU/CPU air.
http://freenet-homepage.de/haraldsch...ntx360/x34.JPG
Then i would proceed to make a D_Ust *Stupid Censor filter* cover and mount it at the place the Drive sleigh ejects. Either just by bending a perforated sheet of aluminium and spraypaint it black or so.
By having the drive completely outside the GPU gets more air instead of 15% thus cooling down more. And having a J-Tagged box you really don´t have the need for a DVD Drive :D
oh and i wouldn't cut up the backside like the guy did on the picture, and i would have used XCM fans or so that makes more air flow straight trough.
But thats me :D