You will not know if you need an over-sized king pin until you take everything apart. The only time you would need an over-sized king pin is if there is slop between the original king pin and the axle. That occurs very rarely. What does occur all too often is excessive wear between the outside diameter of the spindle bushing and the spindle. An over-sized king pin kit won't fix that.
Carl


1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission