The passport uses a native USB controller on the drive. Do not expect to crack one open and place it in you MBP.
I have a 1TB Scorpio in my 15" MBP. It work perfectly. I can take my songs, a few movies and photos with me without a battery draining external drive.
I disassembled my Passport 250gb. There is a plugin USB adapter. You unplug it, its a standard SATA drive.