the car that never was : 1967 to 1971 Valiant 340 look ?

I had a guy bragging to me at a cruise-in a couple weeks ago that he had a '70 Valiant 340/4speed he was working on. Numbers matching!
I said "Oh, a Duster?"
He replied with "No, its a valiant, it looks like yours, only a plymouth"
I have a '70 340 Swinger.
Another random guy showing up at a show (without a car) bragging about **** he doesn't even know about.