63/64 13 and 14'' sbp wheel question

chryslerfat said
I know they came on the cars that received a 273 Commando as an option. That would take it back to 65 for my knowledge.
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Correct, '65 was the first year for the 14" SBP wheels and they came in two widths.... 14 X 4 1/2" and 14 X 5 1/2".