Hey gang. I tried doing a search in the forum for this, but came up with nothing.. So, I apologize if this repeated...

I am helping a friend who has a '68 Hemi Charger R/T, Nov. 67 build date. Now, '68 is an awkward year...... Being a 1st half production car, would it more than likely have a hemi that was built earlier with the '66-'67 allen head intake fasteners or the later year hex-head fastener?

Thanks in advance...