Lead on Dart ?
Hoooboy... '68/'69 are easily mistaken to a layman... big square scoop... lift off hood... big dual carbed engine... mother of all barnfinds. Could be a wetdream come true- even if it's not factory, but as long as we're dreaming, why not?
"Pandemonium" was the name of several Mopars, but I haven't found reference to a Dart yet...
Best of luck on this one!