Unusual things on my 1966 barracuda

I have a partial build sheet. My shop is in the process of being cleaned out as I am putting up another building. I will look at my title though and get the VIN . I should also be able to get to the fender tag as I believe it is on the car because it should be when ready to paint. It shows as a Formula S,disc brakes and is stamped out as I recall, that i believe is the vinyl top inspection.
It could possibly be the last,or one of the last, big window barracudas built. I'm trying to recall if there weren't other things. I believe the washer pump was a 67 model.
Yes it could very well be a "clean house" car. It could have been ordered with disc brakes and they were out when it came down the line. Heck the car before yours or the one after could have got your brakes.