Duped

The other lesson here is why start with such a basket case? I had a 73 Duster body that I couldn't give away that sounded 5 times better then your car. I love Dusters, but much of the love is because they are about the cheapest muscle car you can build.
I think using Demon parts is fine to, but I wouldn't just because of the extra cost with no huge leaps in improving appearance. Variety is what is cool, so do what you like and have fun!