Hello, i have the following drive: http://www.lacie.com/support/support_manifest.htm?id=10065 the 640GB model. I have just purchased a new macbook pro and i am thinking of upgrading my external drive, instead of buying a new one and to connect it with my new computer with a thunderbolt to firewire 800 adapter. I am thinking of purchasing two 2TB 3.5'' HDD and to replace with these the ones that the drive currently have. Does anyone know if this will work, or if there are any proprietary connectors inside the drive which will prevent this modification? I know that a USB drive will be faster, but i really like the drive that i currently have, the looks of it etc and i can not afford to purchase a new lacie drive since these are extremely expensive. Thank you for your help!