I have a 61 Valiant and need some info on where I can find NOS wiper arms and blades.

I don't know how NOS they are, but Rockauto has really good prices on wiper blades right now.

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/6 '67 Barracuda convertible, electronic ignition, 4-OD, street cam, SBP KH discs, 3.55 SG 7.25" 1" t-bars. Bilstein.
340 '67 fastback, Doug Nash 5-speed.
1988 Toyota pickup work truck

If it's a trailer queen that has to have the correct factory-applied tobacco juice on 'em from the slob on the assembly line who drooled on 'em while installing 'em, it's "go fish" at the usual suspects for NOS parts.

If what you need is new wiper arms and they don't have to be precisely just like original, see here

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一期一会
Too many people who were born on third base actually believe they've hit a triple.