I’ve reused them.
A new spring pin isn’t a bad idea.
One might have to question the actual material used in a typical hardware store or Harbor Freight spring pin, if the factory pin still fits tight I’m sure it’s still fine to use.
Factory hardware is known to be of high quality.
If you’re worried about it working its way out you can always peen and flare the ends a bit into the chamfer in the gear using a pointed punch.
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1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/3.08
2002 WS6 Convertible LS1/4L60E/3.23
1966 VW Type 2 Single Cab Pickup 140hp 2276
1956 VW Type 2 Panel Van 36hp 1200
1957 VW Type 1 Beetle 180hp 2276
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