Ford 9" in 1965 Barracuda...an option?

I am aware of the brake issue and that it can be updated with newer Cobra Mustang parts, as well as the pinion offset of this rear axle. But, what are you referring to in regards to "the rotation on the housing ends"? Thanks.
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If you look at them from the side, they are rotated about 1/8" of a turn from being squared up. So if you change to drum brakes and certain other brakes, it will be difficult to bleed them because the bleeder is not at the top.

Some people will cut the ends off and correct it, others will re-drill backing plates, others will remove the brakes to bleed them. It all sounded to me like too much hassle to keep a Ford rearend with notoriously poor brakes on a Mopar.

I made this as a template to use in redrilling backing plates for drum brakes before I found out there are several different axle offsets on those too. I gave up on the whole idea and replaced the rear end. You can see in the background that the housing is vertical as it should be in the center but the ends on this side are rotated CCW.

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