1931-1940 p/n 363306 king pin fits all 1.5 ton trucks. Bushings, and all the other components of the king pin assembly are also for the same years. You will find them quite often on e-bay. Try Chev's of the 40's and others. I think the later year trucks at least thru to early 1947 also used the same parts, this is a guess as I don't have a later parts book..
