Ford 9" Question - 31 spline Full Floater or 35 spline Semi Floater??

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I just got done with a Strange Pro-Tourning floater modification on my 9". It is a really slick kit! I was able to reuse some of my Wilwood brakes but did have to buy a new ebrake assembly and hats. The rest bolted right in. With that kit you can have axles in 28, 31 or 35 spline center sections.
https://www.strangeengineering.net/p...es-brake-kits/