Hy knuckleskinner, I didn't have the best luck but here is what I found
Kingpin Raybestos 530-1088 $50.79 at RockAuto
Bushing rear end of front spring Raybestos 576-3323 $7.72 at RockAuto
Bolt rear end of front spring 576-4009, no stock at RockAuto
Rear spring bushing Raybestos 576-3314, no stock at RockAuto
I couldn't find a cross to the o.e.m p/n (609071) for the front of the front spring shackle kit. According to the parts book it was the same for the cabovers from 1941 - 55A series, hope that helps.
