The Challenger Trunk Lid emblem is a hard find either used or new. I remember the guy at Carlisle that sold some of them. I bought a few nos emblems years ago and I also bought something that was very close nos from a vender at the Detroit Show. There is another Vehicle that used this Emblem, not sure if it is a 1971 Dart or a Fury for 1971 or another year. This was about 10 years ago and exact information I would have to do a study on and post and don't have that time. I have all the emblems stored away if I ever do a restoration to my Challenger and that is very unlikely because I like it as a race car and I put on the New DODGE emblem from a Charger or Challenger on my trunk like saving the NOS ones. I believe the 1971 Challenger Dealer Brochure has a nice picture of the truck emblem. Good luck in finding one and when you do I hope you can buy it for a price you or your customer can live with.