Plastic model kit
The "new" '72 Duster looks to be a cleaned up repop of the MPC kit from 1972. Looks like they removed the script on the tail light panel and amped up the side marker lights and windshield wiper arms. The chassis is the same they used on all the MPC A Body kits I've seen including the Demon, which has nothing in common with the 1998 AMT/ERTL '71 Duster 340 release.
And it's Round 2 that's releasing these kits. They bought the AMT name and molds as well as MPC which went under in 2011.