Looking at 1 of 1 67 Formula S

Hmmm, my understanding was that the surviving records for 1967 do NOT break down production by body style, engine and transmission together.

So, you can find out that there were X number of Barracuda convertibles, and that there were Y number of 383 Formula S Barracudas, and Z number of automatic transmission Barracudas, but there is no way to prove how many convertibles had both a 383 and an automatic.

Here is a summary of the known information: