Actually, don't even
think of overwriting your oobs, since we already include the OOB swapper utility to make handling alternate OOB sets easier. With the plus point, of being able to restore to stock OOBS as and when required.
Game Guide -> Game Installation ->
Manage OOB Sets.
(Of course, you already knew this, as all users will actually have read the Game Installation section of the GG on installing the game ...
)
Cheers
Andy