Yea, looks like my hunch is turning out: the '67 & 68's didn't have this emblem. And as pjmoreland stated, wouldn't even make sense/be accurate for the 67's due to not having an actual "ACC" position on the ignition switch.
It would be nice if the aftermarket vendors would state this little bit of info for this. They're pretty good about a lot of the stuff, maybe this one has just slipped by. Eh, I'm out a whole $3.
Looks like LMC actually does list this emblem as '69-'72". But I'm looking at another that just has the "67-'72" description.
Thanks for the help guys!