Formula "S" question

Never say never when it comes to year model correct parts on a Mopar. I had a SG 7 1/4 in my '65 "S" auto. I saw an "S" with a Valiant script on the trunk, ala '64. I have also seen the V rear trunk trim on a '66 and the '66 next to it had the fish trunk trim, both original owners swore they bought them like that off the lot.