After much tinkering i figured out how to reset the cluster, So it could probably accept new programing keys for immo. but in order to program it you would still need to go to a dealer. Figured out how to correct the milage too though.
If anyone is interested i can dump the flash chip on the cluster. This is what keeps all the graphics for the screen. Prehaps if i get my hands on the "GR" cluster or STI or BRZ i could dump those too in order to make them interchangeable. or If anyone is willing to help me reverse engineer the flash we could make custom logos or something.
If anyone is interested here are the pictures of these new clusters internals. and the flash chip close up.