I would put money on that being a little bit too forward.
In the 1970 assembly manual (which shows 1971 information), the specification is 3.38" from forward edge of hood scoop to forward edge of decal.
Keep in mind this was done on assembly line, so locations would vary...
The tendency for most seems to be placing it too far forward.
I would certainly think that the decal should always be behind the point where the scoop turns up and forward off of the hood.