my guess as well67 or 68 300, Newport or NY'er.
Your eyes are fine, different bodylines between the '66 & '67.my guess as well
mirror and roof line (fast top?) says same thing to me ... I have a '67 300 so I have seen that view up close. i also have a '66 300 sitting right next to the "67 -- if its the same, it doesnt quite look like the '67 for some reason (may be just my old man eyesight)

Hot boxing....That looks like a Cheech and Chong haze going on there.
I reckon there is a "300" on the medallion, I've seen Dodges/Plymouths doing somthing similar.How come it looks like it has a round medallion on the c pillar?