Hy jack02, according to my TRW chassis parts book there were two possible kingpin sets for a 1942 1 1/2 ton
Standard duty set K7 .921 X 5.18" = Napa p/n NCP 2621161 $73.99
Heavy duty set K129N 1.109 X 6.75" = Napa p/n NCP 2621275 $114.00
do either of those sets fit your dimensions?