I got mine from Subaru Parts. It will cost you a pretty penny, though.
Part number below.
Note that it does not come with a Subaru badge. You can either sell your soul for a new one or just transfer the existing badge, but be aware - it's a bitch to get off. Subaru use some serious double-sided tape that is worse than trying to get gum out of your hair.
To complete the S402 look, just remove the chrome edge, sand it back, spray on some primer and then some matt black, then snap the edge back onto the main assembly.