Does anyone know how many 1968 Barracuda 340 formula s fastbacks were produced?

Google is your friend
In 1968, the Formula S package included a 275 hp motor, heavy-duty suspension, firm-ride shocks, E70-14 Red Streak tires, and dual-exhaust. Total Formula S production for 1968 was 5,196 units, with more than half of that or 2,857 being fastbacks with 340 power. Total Formula S 340 units were 3,917, and total Formula S 383 units were 1,27012.