Found this other 71 Demon 340 car with the same scoop. Makes me wonder. Is it possibly right? Any way here what shell look like when all done plus a black top which I think helps sets off some of the orange.
Per the tag that car has a SPD of Oct. 27 1970 so it isn't the earliest but it IS an early build car.
That hood paint matches because it looks like the engine compartment was painted.
The hood is NOT correct for that SPD on a 340 Demon.
Rear bumper is a 73 also. like you said it's 40+ years later.
Just an FYI
Ron