What's wrong with the one you've got?
I work in a music store that has inside one of the 2 Akai authorized service centers. It's called TSI(Techni-Serve-Industries). This is on the East coast close to NYC. The other one is VST in California. The Akai Pro web site has both numbers. They should be able to order one for you. It might have to be the blue one though. Unless they have old enclosures.
They aren't showing any love for the 2k owners.I asked about it before but Akai seems to only make faceplates in different colors for the xl.You might be able to track one down in the beige through Vst or Akai,maybe even Guitar Center.