I have a 1967 coupe barracuda with a low serial number and shipped march 1966.

Both vin tag pics are brutal...wheres pic of vin tag? Cover the last few digits of vin if your concerned. All those pics literally show zero relation to Petty.
Unreadable fender tags, no vin tag. You have a 67-69 notchback with a rollbar...that's all I see.
Sorry...gonna have to put more proof out there.