Would anybody know if all early non SS or Z28 cars in 67 left the factory with 14x5 steel rims or what date did they switch to 14x6 rims? I am trying to go completely factory in every detail and I bought car 26 years ago and it had 14x6 steel rims on it, however acrroding to my research they should be 14x5 rims (car is 04A 67 build date).