Forgive me if im wrong, being new, but the VIN
should tell you if its real or not. I may be new around here, but this is my experience:
I just got my new title and insurance. They both verified that my car is a GT/CS not a regular mustang. I was suprised, i thought that they (the DMV and insurance) called all 1968 mustangs the same but the dont. My insurance informed me that my car was a GT/CS special edition. That was a cool unespected surprise for the system to verify what i already new.