I just replaced my kingpins in my '53 and I used a 1/2" deep impact socket , which was very slightly less in diameter than the kingpins and beat the hell out of it while holding it with a pair of vise-grips, about 3-4 whacks with a 2 1/2 lb sledge and both kingpins came out real nice , this was on a truck that hadn't turned a wheel since '72
