In the first video about the Dart Sport, there was no mention of the partial V.I.N. stampings on the rad support or the trunk gutter on the driver's side matching the V.I.N. on the dash.
And he mentioned that the car had manual drum brakes on the front.
All V8 A-Body cars from '73 and newer had bbp discs up front.
Unless they were changed to drum brakes, this info is wrong and misleading.
Video #2 about the '71 340 Duster is way off.
The easiest tip off that the numbers wad been changed on the dash is the gauge cluster and trim on '71 340 cars were always the rallye instrument cluster and trim, not the standard cluster.
In fact, the hole for the rallye cluster is bigger on the real 340 cars, so to put a standard one in would require a lot of work to do it properly.
The grille is the wrong one too, but that is easily changed as the car is customized a bit anyway.
Also, there is no mention of the fender tag and the body stampings either.
IMHO, the car is a tag swapped car.
I do think that Steve Magnate is a knowledgeable guy, but he missed it on these videos.