My best friend died last year of Lou Gehrig's disease and his family is having the automotive portion of his estate auctioned on August 3rd. Although he mainly raced B-bodies he also had 3 1973 Dusters. There's a crap load of B/RB engine parts as well as 426 Hemi. I've posted a link to the sale bill below.
https://www.moravecauctions.net/_files/ugd/7409c3_5fe4a6ce8cb14bd69458635dadb5cd88.pdf
https://www.moravecauctions.net/_files/ugd/7409c3_5fe4a6ce8cb14bd69458635dadb5cd88.pdf