From memory..
They pulled the sound deadening out and all the seats but the driver's.
They replaced the steering column adjuster with a manual one.
Brakes are smaller.
Wheels are lighter.
Basically what all the bolt on 5.0 guys do to their cars for a track day, Dodge is just doing it for you and charging extra lol.
Pretty much. I have a Charger Hellcat, but I'd never get the Demon. I'd much rather a Challenger Hellcat with the widebody. You're paying premium for warranty & rarity when it comes to the Demon. Very cool, but not my cup of tea.