I am going to buy 2 samsung EVO 1TB drives to upgrade my Harpertown 3.1 Mac Pro. Anything I need to know in advance? Do I need an adapter for the internal bays and also do I need some type of cable adapter to hook the ssd up to the 3.1 Mac Pro? I plan on just cloning my current drive to the new ssd boot drive which is still running Snow Leopard. Any issues with that? Thanks for your help.