The car, complete with 3D printed pieces, looks really good. For some reason the sound was about six seconds out of sync when I watched it, but it seems OK now that I've refreshed the page, so it was probably an issue at my end. Just one little criticism - the side markers on the front fenders are further forward and higher on a '69 Charger.
BTW. I used to work in the sign industry many years ago, before the modern re-positionable vinyls were available. We used to make our own application spray with a dilution of a detergent called Brij. I don't know how easy it is to get hold of.