Pug bearings only wear out after 10 years or so ....
Mini wishbones would be interesting to see, but I don't think there's enough wheelarch space as its designed for a wheel moving directly vertical, which the wheel on a Mini does not due to the unequal arms, boot floor is a lot higher on a mini to accomodate them too, so you'd need either VERY short travel, or raised rear ride height.
it is one of the reasons peugeot used their arrangement, getting a decent boot size+shape
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