Regarding the Hemi emblem under the rear seat. I've heard from several old timers who worked on the assembly lines back in the day here in Detroit, that during final assembly, whatever small parts they couldn't fit to the car in, were thrown into the car in the rear seat floor area as the car went down the line. Then, upon delivery to the dealer, it was then up to the dealer to remove the rear seat cushion and find, fix, or put on any parts found under the rear seat. This happened at Ford and GM plants too.
Awesome car and progress! Keep it going!