We daily drive our 69Z. Same basic wiper system on your 69 bird, and probably identical arms.
I installed a very good reproduction wiper arm assembly from Heartbeat City. The original Aero style that holds the rubber to the glass better. You can have them in brushed stainless or polished stainless.
You'll pay a bit, but they work just fine and look correct (nothing worse than black plastic wipers on a classic car). We've been in some pretty good downpours and not a problem.
https://www.heartbeatcitycamaro.com/...yle-Coupe-Pair
https://www.heartbeatcitycamaro.com/...yle-Coupe-Pair
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2019 Pontiac Heaven class winner
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