Just finished replacing both inners and outers in my 46 Big Bolt. Maybe everybody knew this but me. I got blank looks at all the local stores including NAPA. I then went to the original specs and got the original Hyatt numbers (144527 for the inner and 144525 for the outer) then to the Timken cross reference page which led me to Timken nos. KD12051-Z for the inner and KB11786-Y for the outer. The local Advance Auto Parts store was able to get them for me. Seals were another challenge but got them from Jim Carter, part #ME677. Had some stripped lug nuts but the local O'Reilly store supplied them for $.49 each, part # 814-015. As usual, getting parts at reasonable prices was a bigger challenge than the installation.
