Several years ago I started restoration of a 53 model 6400, and completed about 95 percent of the work, and found this site very valuable. I don't know how I would have managed without it. Along the way I lost interest in the truck and haven't done anything with it for a long time. I would now like to get back into it and finish the job. The largest problem remaining is the steering box. It leaks like a sieve, and is very sloppy. Does anyone have any suggestions as to where I could buy a rebuilt one?