How do you tell if a car is a Formula S or not originally?

Rocky_JS said
this part memike, "all Bucket seat cars was S models 2 barrel or 4 barrel V8 cars".

In 67 they were either a 273 4-bbl or 383 4-bbl (commando engines). I have never seen a bench seat Formula-S that could very well be correct. (generally speaking) but bucket seats didn't make it an F/S car by default.

Thank you Rani, so Buckets and a V8 back in the early A body is a dead give away is correct ? and S package was V8 and never a bench
seat in an early A ? I am still in the air about an early A S car having a 2 barrel carb, but it seems like I have seen one before somewhere :coffee2: