I have NOT used it and I don't know of anyone that has. My understanding is, "it uses a small pump inside to put a hydraulic squeeze on a clutch pack that dramatically improves the handling characteristics of the entire vehicle." If that it is all it does, it should work in any 8.8. There is nothing different about the 8.8 axle housing in a Saleen or a stock mustang.

I am not sure if you are aware, but stock axles are 28 spline, not 31. So I am going to assume that the differential is also 31 spline.

Take some pictures of the swap and let us know how it works out...