'''Theoretically - yes '''it can be done, only you know your abilities. [http://www.ifixit.com/Answers/View/132942/Detailed+Removal+2TB+HD+Plus+Install+4TB+HD+%2B+Formating|Start here]. Familiarize yourself with opening exchanging the drive in the previous model, then look at the teardown (not a guide) for the new one.
'''Take lots of notes and pictures'''. Use the recommended tools ''(every job is easier if you use the proper tools). '' You can write and publish the guide for this.
Good Luck,
''If this Answer is helpful '''please remember to return and mark it '''Accepted.''