I think all the MMC Limited Slips are Quaife. I have a spare Salisbury 7HA +8 axle and it has a Quaife Limited Slip.
However My +8 Bitsa has a Chevy Pickup Dana Rear Axle with Auburn Limited Slip. This is what Andy G. Is warning You against. It is a crude spring/metal plate gismo and I should not have it in My +8 for the reasons Andy G. explained. It has not caused Me any problems so far, but if I was a more "Performance Driver" it could be a problem. Maybe good in the mud and snow but that is about all.
Quaife is another story. Super Deluxe well designed unit I am told by those that know.
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