Another one of Ford's "BETTER IDEAS"...You couldn't get twin I beam Ford truck to track straight if your life depended on it..I have always wondered now people drove the things..After overhauling the kingpins I would check at least the camber (which is unajustable except with a torch) and it would be pretty close..Setting the toe in negative helped some and making sure the rubber bushings were good..BUT!!! I never could keep a Ford truck "Between the guard rails "...I don't think they put much thought into the caster..(kingpin inclination)..For some reason I am building one now..For resale of course...Al..