I was reading the article for the Power Mac G4 on Wikipedia, and where it gave information about the system just below the picture it said "Single or dual PowerPC G4, 350MHz - 1.42GHz (Up to 2GHz through 3rd-party.)". How is this possible? And, if so, how could I do it? What parts would I need? Would I be able to keep the dual processor configuration, with two 2GHz CPUs? I've always been interested in making my Power Mac G4 MDD faster than it already is.