I have a friend with a powermac g4, and he wants to put in a new internal hard drive, the model number on the mac is M8493 is there a limit on the size he can run? I heard something about quicksilver limiting the size you can have but im not sure if this applies to this model or not. and what kind of bus interface would he need? IDE, or ATA some research I did points to either, and rather confused me so if anyone could help that would be very appreciated, thanks!