Anyone other than Chisolm and Dave?

If so how do you find it? Was it hard to get it installed?

i think mike got one of these and jason (BB and ego)

The diff has completely transformed the car for the track and hard "spirited" driving. Pretty much even in sharp 2nd gear corners you can just MASH the throttle, and it just grips and goes, it feels like the diff literally sucks the nose in under heavy acceleration. No more trying to delicately balance the throttle with understeer/wheelspin :). Makes a massive difference at the track, you can put down MUCH more power out of corners. Though given the overall cost of the diff and installation, IMO you really need to be hitting the track regularly to justify it.

By the time you add extra cost of freight, bearings and speedo drive gear, you are paying around $1900 for the diff, unless it's gone down.

Installation will cost around $900-1200, depending on where you go. It it far from an easy job, the gearbox has to come out and be stripped down. You need a diff/gearbox specialist or very experienced/skilled workshop, don't expect your average local mechanic to take on the job. Also if you likely to need to do your clutch anytime soon, do it at the same time.

I've got one. No where near as aggressive as the cusco clutch pack type LSD, but having said that I used to love the feeling of cornering at speed with the cusco LSD.

Quaiffe unit pretty much feels exactly like an open diff most of the time, but grip is greatly improved over the factory diff, and as good if not better than with the cusco.

Installation, well make sure you find a very very very good gearbox / diff specialist.

I asked about these in September and got this reply from RPW:

"The first five orders are discounted for $1925.00 deliverd with new bearing and speedo drive gear."