What’s the exact process to identify a real 66 Formula S Barracuda?

66fs said
67 had a different engine code for 273 4 barrel, as did 68 but I have never seen a 68 273 4 barrel.[/QUOTE 65-67 only for the 4 barrel engines. I don't have my book handy but I think the HP code is 32 under the AB. I'll look it up when I get home.