If your '64 has the factory limited slip for the 17 spline axles, then you might have to change the whole carrier. I'm not positive but I don't think the 30 spline side gears will work in place of the 17 spline gears.
I would suggest verifying exactly what is in your '64 12 bolt to start with, and then go from there.
Quote:
Originally Posted by shortbed70
I need the narrow rear and my 72 rear needs gone through and has an anemic 3.78 rear and open where I have 3.73 lsd factory.
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