If I start with the Demon then the only items I would need to swap over are the following:

factory moon roof
Fold Down rear seat brackets
fold down rear seat rear package tray
Everything else would just need some minor patching.

So it sounds like the time it would take to do the 1/4's and the tail panel may be more than the time of putting the moon roof & fold down rear seat into the Demon??? Is that the consensus??