From what I saw at The Nats and the pictures I saw from Carlisle (back then), the customer demographics were a bit different. Or perhaps I was a bit more forgiving in my younger years, just amazed that something as The Nats DID exist? With a few mentors ro guide me, who'd been there before and...
In the K-car era, a white Dodge 400 convertible was shown "under construction" one year and then "finished" at another meet. Full rwd conversion with a stout 440 in front. Then there was the silver LHS with two 3.5L power trains, one front and one in the back seat. Looked stock on the outside...
When the Mopar Nats were going well, it was THE premier Mopar event. The first time I went, it was at National Trails, that was in about 1988 and I only missed about 3 years total with the last time in 2005. I used it as a "Get out of town" and "Recharge my Mopar battery" event. I would go up...
Well, the reason I replied that way is that in addition to FL, TX is in the mix, too, with some northern DFW (i.e., McKinney area) events listed. Certainly, TX is not "East Coart" by any means, fwiw.
FWIW, any national meet of that sort only allows members cars to be in the show. Insurance issues, usually. Some national clubs allow a "member at large" non-member to pay full entry fees to participate in the event (all of it), but not receive any awards. Of course, spectators are free.
Never have seen that many Avantis in one place at one time! Neat!
The picture of the darker Barracuda on "the grass" looks like it could have been in a premium Plymouth sales brochure that year. Neat, too! Great pictures. Thanks for sharing them with us.
Quick Google Search
1966 "Let Your Self Go . . . . Plymouth
1967 "Plymouth is out to win you over this year" heart appears
1968 "The Plymouth win you over beat goes on"
1969 "Look What Plymouth's Up To Now! Fury
"Plymouth Makes It" logo appears heart on keychain w/ignition...
What was the slogan for 1968? As I remember that "pointed-tail heart" earlier than 1969. More research!
In the mean time . . .
Take the lyrics for "Up, Up, and Away (In My Beautiful Balloon" and replace "balloon" with the name of your favored C-body vehicle. Make that change all the way...