Need some help from you Honda 400ex experts... Will a CDI Box from a 2005-2007 400ex work on a 1999-2004 400ex? The reason I am asking is I can pick up a spare CDI box from an 05 for cheap, but I don't know if it will actually work on my 04 400ex, and I cannot physically inspect it prior to buying. Honda does list different part numbers. Anyone have any knowledge or experience with this? Thanks!