I am in the middle of this mod and am familiar with the repositioning of the steering box, the shorter pitman arm, and the different steering arm, but I don't understand how those changes would affect castor, which is nothing more than how much the straight axle is tipped forward by angled shims.
Carl

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