Correct seat fabrics would have been different also but as Bill stated these too were "carried over" between 57-59 due to surplus/shortage of stock. Hood and fender emblems were also carried over between 58-59 for stockage reasons and sure many of us have seen 58's or 59's with "incorrect hood and/or emblems.


Bruce
Old Toy: Ol' Betsy stock 59 Apache SB Stepside (Gone but not Forgotten)
New Toy: 1962 Impala SS Coupe
The Driver: 1990 Toyota truck