Getting a little “Moparish” in my garage

In 69 you could get a 340 without the S pkg, BUT you could not get an S pkg without 340 or 383, if that makes sense lol. Not so in 68, any 340 68 barracudas were S cars.
Actually looking at the exhaust manifolds I believe they’re the same as the 340’s not sure if they were swapped or if that’s just the way they’re supposed to be. Ohh before I forget if my cuda was a factory 1969 340 car does that make it a formula s or am I mistaken?? I’m still learning about these older mopars sorry for the newb questions

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I believe the S was just a suspension/ brake/ badge package.
If I`m wrong I`ll be corrected in 3-2-1:)