I have decided to go with the plan below, but instead of using a small gpu heatsink for the cpu I cut the original cpu heatsink down to 3cm. After testing it by plying a dvd the temps were only 30 for the gpu and 25 for the cpu. I was surprised at how low they were when I had the stock xbox fans blowing air down onto them. Instead of these fans I will use 60x10mm fans that are half as loud, but push even more air. I will also have exhaust fans at the back. Here is a link to youtube where you can see me testing the cooling mod: http://www.youtube.com/watch?v=NLfzXXa04dE Here is a little picture of the setup I had: