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Other good thing with the Torsen/Helical LSD is that you don't need to use a special oil for the gearbox and they never "wear out" so nothing to replace/rebuild. Plus, they're great for general...

The M-Factory and Quaife are the same solution
M-Factory quality not as high as Quaife
But wait until you see the price of the Quaife (LOL)

The pop up regularly on the Facebook Pulsar page

It's a viscous LSD - not greatly effective but certainly somewhat more effective than an open diff (while it works, they don't last forever, when...