I'm basing this information off what the seller told me. I'm assuming he told me the truth because he handed me a title from 1970 showing he was the original owner of the car but that being said... I wondered about the shackles myself and why the Rally II wheels are gone. The tank I didn't even notice. I didn't know there was a difference in the shifter until you pointed that out. Not sure why so much is changed on this car. He said he drag raced it in town a lot when he was younger. Another odd thing is the front springs are completely worn out and have blocks in them to keep the car up.