E46 is for that car ONLY (physical dimensions are different). e38/39/53 are interchangeable but e53 screen is set at a different angle. As mentioned above the screen can be reset. I saw a write up a few years ago on bimmerbord or maybe this board, don't remember which. Do a search. Or search the BMW part numbers on the ETK disk and see the P/Ns for e53 vs the P/Ns for e38/39.