yeah the front is about 2-3 inches too narrow for the 59 to be a straight drop in unit here is the artical i am referencing and you will see what i mean http://www.thehollisterroadcompany.com/C10ifs.html
great artical well written but their has to be a simpler way thay what he is doing here the notching i and thinking of doing won't shift the entire front geometry like this guys work


1937 1/2 ton