I doubt it's Hayabusa. I don't think that the model designer making a Hayabusa model means anything. If anything, it was a model that wasn't finished in time for Halo 4's release that the designer later finished on his own time.
The codes are probably just rehashed preorder codes. --- The mind of the subject will desperately struggle to create memories where none exist... ~~SWINGIN' PAST YA KNEEEEZ~~