What a dilemma!

Also don't get to hung up on the factory color or motor of your Demon. Seriously, sometimes I think people put to much emphasis on this. Sure it's nice if it's a factory RARE color and you have the numbers matching motor etc and your going to sell it to a collector or on B.J. But some cars just plain have nice lines and they're always desirable.
Think about this, the last time you went to a car show, how many cars did you notice didn't have the factory paint job, or numbers matching motor? Like most people you probably didn't notice.
A nice looking Mopar is a nice looking Mopar, so paint it whatever color YOU think will look best on it, and enjoy the hell out of it.