65 barracuda Commando 273 /Formula S?
It would say on the fender tag. I found the build sheet to our Barracuda under the carpet with the seat stud right through it. In my opinion a Commando Barracuda (like ours) thats not a Formula-S is rarer then a Formula-S. The non Formula-S Commando 273 cars got a fender badge thats says CommandoV8. Formula-S cars just got a badge with an S on it.