I just received a WD Raptor hard drive to replace the original hard drive in my G5. The original drive will be the slave/secondary drive. I have a couple of external drives to help out, but I am not sure how to go about replacing the master drive (I have replaced slaves before). Also, it is not a retail kit, so I am not sure what I need to buy before attempting this great feat. Any advice? Can I clone the original drive?