I'm taking out the 160gb 5400rpm drive in my 2.4ghz MB and replacing it with a 320gb 7200rpm drive. Obviously, I'm going to need to clone the original 160gb HD onto the 320gb before I do the swap. I don't have an external enclosure to put the 320gb drive in for the cloning process, so can someone recommend one? Also, will I have any problems, irregularities or major differences in my new drive if I use Super Duper to clone?