4d9r, go look at auto zone they have an adjustable hitch, for width. i you use it let us know , i am going to try later in the year. if the beds are the same for 54 to 82 chevy stepsides arre the frames? i know the fenders are wider but is there any other changes? you would think that a hitch for a later model would fit. must be the old computer glitch if the computer doesn't say so it doesn't work. all the old knowledge has retired. another soap box for another time. ron