Does anybody know if its possible to swap the guts of a 2.0 GHz dual-core/PCIe G5 into the case from a 1.8 GHz dual-processor/PCI-X? I have both on the way from ebay. I bought the 1.8 first since its supposed to be in neat mint shape with airport extreme, bluetooth, keyboard, and mouse. Then I saw what looked to be a pretty good deal on a 2.0 GHz dual-core model though the case did have some marks. Given the complexity of even the air-cooled G5s I'm doubting this is practical. I'm not going to get into hacking anything up.