Demons

Besides I think, that less than 10% of the HP Demons have survived, including the customized ones.

10% is quite a good rate for a nearly 50 year old - then relatively cheap - high performance car aimed solely to the youth market.
We don't talk about a 300 Hurst Chrysler, but about a cousin of the Duster 340 - and from the 340 Dusters are for sure not 30.000 still alive.