Dart Sport badges
The 73 Dart had "DART" emblem above "SPORT" emblem. The left edge of the Sport emblem was directly under the letter R of "DART". Both are still available today. I see both NOS and used ones all the time on eBay. If your car is also a 340, those cars had a "Dart 340" emblem. The "340" emblem was also a separate emblem and on the same line with "DART" and still above "SPORT". All of my emblems had two mounting tabs which were pushed through the metal fender. I recommend you take the emblems to the body man before he repaints your car, in order to allow him to drill new holes to accomodate the new emblems. Chrysler also made "SPORT" emblems with adhesive stick on (no pins to stick through the fender metal). It just depended what the factory had in stock back in the 70s.
If you are as particular as me, let me know and I can trace you the exact locations of the emblems on the fender and get it to you somehow. I've had my 74 Dart Sport since 1974 and I replaced all the original emblems when I restored it.
I agree that "Demon" should not be on a 73.