I went to a show in Washington about 5 years ago and tried to talk with the "rumored" source of the b'cast sheet. He looked at me like I accused him of "stealing the car". I got no info. I'm sure it's possible there is more to the story. Back in the '70s the "diehard" HEMI guys drove everywhere for bits & pieces.
The red & green cars got around - maybe they all did.