And the S550 hub is huge. Significantly bigger than a Challenger rear hub, and that car weights a bunch more than a Mustang. I tried to fit the S550 hub inside of the drum-in-hat e-brake off a Challenger and there is no way, it was like 2” bigger in diameter and wanted to sit on the e-brake shoes. This thing is fairly massive.
And in case you are wondering, yes I have plans for a weld on axle end that would use this same hub. Something similar to this: