Amen. I bought a 69 Barracuda FB 340 Formula S new in 1969, and I cannot find any pictures.
It's funny you mention Corvettes. They are probably the car MOST often misrepresented as matching numbers. Also, I was at the Mopar Nationals a long time ago, and there was a sign in front of a 70 Hemi Cuda convertible that said "20 of all the 10 1970 Hemi Cuda Convertibles ever made are at the Mopar Nationals this year.
In 1992 I bought a 69 Barracuda project car. It was, more or less, a matching numbers car, but I did not care. It was originally the aqua color (Seafoam green), but I painted it F8 Dark Metallic Green.
Reminds me of the Johny Cash song where he stole parts from his assembly line job over a period of many years and built a car.