Kind of confusing . Seems like 1964 only - H was fremont ??? H was supposedly used for GMC in Oakland for years 60 - 66 of production .
Quote:
1st digit - Model year -
0 = 1960
1 = 1961
2 = 1962
3 = 1963
4 = 1964
A = Atlanta, GA
B = Baltimore, MD
F = Flint, MI
G = Framingham, MA
H = Fremont, CA (1964 only)
J = Janesville, WI
K = Kansas City, MO
L = Los Angeles, CA
N = Norwood, OH
O = Oakland, CA
R = Arlington, TX (1964 only)
S = St. Louis, MO
T = Tarrytown, NY
U = Southgate, CA (1964 only)
W = Willow Run, MI
Y = Wilmington, DE (1964 only)
Last 6 digits - Production sequence starting at 100001 at all plants.
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http://www.google.com/url?q=http://6...iliEpOdb4WNqgQ
This one is for 1964 Chevy cars but it is using H for 1964 Fremont so I'm guessing Fremont was changed from H to z in 1965 . Scroll down to the explanations for the 6Th symbol .
http://www.google.com/url?q=http://w...bNNPWWZM2KIlBg
While I was looking that some of the info indicated duel wheels were offered in the C-30 and up . Of course that doesn't rule out special orders .