Did I do ok on this?

My question is this;
No build sheet/ no fender tag/ no vin; but you say it appears to be an original Formula S 318 car. How did you figure that out?
I don't have a fender tag.i do have the vin.its an original 340 car with a 318 in it.isnt that the vin in the registration I posted the pic of?sorry for the confusion.