Go with a new complete switch. The Falcon and Mustang vendors sell them. Some of the new after market stuff like Drake is pure junk. I replaced my keyed items, ignition switch tumbler and door locks, and have had problems ever since.

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"Tell it like it is or don't tell it at all" 1964 Falcon 2dr HT, 347V8 4V, dual exhaust, 5sp, pwr assist R&P steering, AM radio, heater with defrost and 2sp fan, electric windshield wipers, cigar lighter, dlx light group, bucket seats, console and full carpet.