You should check out the Service Manual, actually. Even if you purchase the drive from Dell, it won't come with a new Hard Drive bezel, so you do have to remove the bezel from the old drive, anyways. Not to put too fine a point on it, it's just two screws, making the whole thing "Unscrew 4 screws, slide out, unscrew 2 screws, screw two screws, slide in, screw 4 screws. Heh heh, I said screw. Then it's software time."
Bonus, there's no additional adapter between the drive and the board on this model, so no fears there.