As alluded to in the diff discussion, the cost of the diff is just part of the equation. A Quaife will require little to no maintenance, barring an unusual failure, and will be a huge improvement over an open diff. It should last for several seasons without maintenance.
The true limited slips (VWMS, Kaaz, Gemini, Peloquin) WILL be quicker than a quaife in most circumstances but require regular maintenance and replacement parts. So the total cost WILL be higher. You will PAY for that extra speed.
In my case, every time my transmission guy cracks the case open it costs me $1000 and goes up from there depending on what needs to be R&R'd.
If you're on a budget, Bill's limited slip is a good deal. The additional discount certainly helps. We just bought one and will be testing it back to back against my VWMS limited slip, the Gemini limited slip, and the Quaife.
MC
Mark Coffin
#14 FP VW Scirocco
Former ITC roustabout...
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