1961, I believe. The 1st. generation alternator, called a "Delcotron" which used n external regulator was on the cars in 62, and I doubt that they would have run two different charging systems in the same production year.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!