I guess it's possible that they may have used some steering wheels and columns from the previous yesr but I would guess that it's not likely. Is there a chance that your cab and front sheetmetal was swapped to an earlier chassis at some point and that they just retained the earlier steering column and wheel?
Hmmm...I'm thinking back to high school (over 30 years ago). My girlfriend had a '57 and I had a '58. If I'm not mistaken it seems I remember that her truck had the earlier wheel also, but I could be wrong. Are you sure '57 was the first year for the deeper dish steering wheel?
Someone will be along shortly to shed more light, I'm sure.
