Part Identification help needed

The Chrysler part number is 3815777.
Casting number on Pitman arm is 3815778.
Pitman arm fits 76-80 Volare, Aspen and 77 and latter Le baron - Diplomat with power steering.
Moog part number is K-7101.
Here's an original Chrysler arm on eBay.
https://www.ebay.com/itm/2252354877...D/4hR4Va7mOrumBRfkPDWQmSrG|tkp:Bk9SR7TGm4j6Yg