welcome to the site! I bought my 58 from Moses Lake, and my 55 from just across the border in Idaho. My 58 had more rust, mainly from getting real dusty inside and then the dust collecting moisture during the winter.
That looks like it is in pretty good shape, if it was a farm truck all its life, probably low miles. Is the engine sitting in there crooked? the 2nd pic almost makes it look like it, may just be the angle of the shot though.
