Rockauto has either ACDelco or Moog king pins for our 3100's. I used the ACDelco ones on my axle. One of the king pins was a bugger to get out. I got one out and ground it down a bit to use as a drive for the other side. Those rust molecules were holding on real tight.

Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.