Difference between spindles?

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Rockerdude

Rock n' Roll and A-bodies
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I'm looking into aftermarket disc brake conversions and I was wondering if there are any other differences between the later 73+ 10inch drum spindles and the 72-older 10inch drum spindles? I know the 73+ has the larger upper ball joints but are there any other differences?
 
I'm looking into aftermarket disc brake conversions and I was wondering if there are any other differences between the later 73+ 10inch drum spindles and the 72-older 10inch drum spindles? I know the 73+ has the larger upper ball joints but are there any other differences?

The 73+ drum spindles use a larger wheel bearing. The diameter of the spindle itself larger.
 
Cool thank you. I don't have a set to compare them to, just wanted to make sure.
 
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