The '63 that I owned many years ago did not have a washer sprayer. If it was available, it most likely would have been an option.
If I remember correctly, the windshield on a '63 is the wrap around type, and would probably require a very flexible wiper arm to wipe effectively. It could be possible that someone replaced the arms years ago with arms that do not match the windshield well.

John


~ J Lucas
2006 GMC Envoy 4.2 I6
2023 Ram 2500/Cumins 6.7 I6
2010 Jeep Grand Cherokee (Wife’s)
2002 Silverado 2500 Gas 6.0
1941 Chevy 1/2-Ton
1942 Chevy 1.5-Ton SWB
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