any info you are willing to share, to help answer your questions
if the Demon still has its original door sticker - it will show when the car was actually completed: MDH (MonthMonth DayDay HourHour)
the engine number, below the head, will show when the engine was assembled
if it was an EXPORT ordered car & delivered NEW "stateside" the VON will be "E3xxxx"
or was it an order originated in Canada?
I also have the door sticker on the door still i would post a pic with the last couple of # blocked but i have not posted a pic on here in 10 years!