Drop spindle/ball joint question

[ryans69chevy]

Does anyone know the size of the ball joint holes on the drop spindle for 63-70 drop spindles? I purchased an unused set of 2 1/2" baer drop spindles from someone for my 69. Just want to make sure they will work with 69 ball joints. I checked for a model number but it's hidden behind the already installed brake rotor.

Thanks,
Ryan
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[lolife99]

Take them to your local auto parts store.
Test fit a set of '69 ball joints or outer tie rods.
That will tell you what they fit.

71-72 will be different.
73-87 will be different.