Can someone confirm if this CPU board fits in the cube once I remove the heatsink? Any additional hardware required? I already have a fan inside... http://cgi.ebay.com/Powerlogix-1-2GHz-CPU-Processor-Upgrade-for- PowerMac- G4_W0QQitemZ150095311818QQihZ005QQcategoryZ80031QQssPageNameZWDVWQQrdZ1Q QcmdZViewItem Thanks!