I'm not familiar with 69 numbers. But you're right in 1969 you can get the 340 in three separate packages: Barracuda, 'Cuda, and Formula S.
But for 68 340 Formula S Coupe, there is a breakdown of 4spd vs Auto. And yes, all 68 340 cars were Formula S. No 'Cuda option package for 1968.
1968 340 Formula S coupe production #'s (BH23)
516 auto
351 4spd
