I don't mind bashing Worman at all.
You don't have to be the Mopar version of Encyclopedia Brown to see all the goofs he makes. The simple truth is that knowing everything about close to 20 years of production by an imperfect company as big as Chrysler 50+ years ago is impossible. Most of us know that... but Worman still thinks he's that man.
When you say something as stupid as the "coke bottle" shape of a Charger body comes from the look of it from the top down, which few people get to see, instead of the look from the side, which is correct, you obviously don't know everything.
As for the 66 Charger, I think we need to distinguish between factory "production" and factory "produced". Anyone who has read Jack Smith's revelations about the design and development of our Roadrunners,
http://www.allpar.com/corporate/bios/jack-smith-roadrunner.html, knows that Chrysler in the 60s and 70s was anything but a smooth running operation. Someone got a wild hair up their ***, pitched an idea to somebody else, this guy talks to that guy, that guy knows a guy who's hooked up with some other guy who's in with engineering, sales, racing, or who knows what, and the rest is history. Some wild hairs become production cars, and some become cars that get produced but never make it into production. Going back to Smith's Roadrunner story, he was out driving around in a one-of car with a 383 engine with a 440 camshaft in it, a one-of torque converter, and one-of rear axle ratio. What if the Roadrunner effort had been nixed and someone came across that oddball? I wonder how much paperwork was done on a car that was being modded time and again to prove a point to someone?
Looking at the quality of work, and parts, on that Charger, I think there's a good chance it was made by someone at Chrysler as a proof of concept that was just one of those wild hairs that never made it. Back then, the only folks who would go to that much trouble to mod a car like that were racers, and racers were all about getting a car done fast and cheap, not pretty. Sloppy cuts, sloppy welds, and sloppy fits were the things were done because they weren't looking at selling anything to anyone but themselves. Looking at the level of effort of that work, it was either done by the factory or someone fairly recently and of it were the later folks would know about it. If it was done at the factory, most likely the guys who did it are dead and whatever paperwork was tossed long before the first computer showed up.