Where? how hard to fit? How much? stories of success? personal experience? not too personal, mind 
Hi Peter
I have a Quaife in mine, they were about $2,500 when I bought mine, maybe more now. In Sydneys recent rain with my sticky tyres I had almost 100 %
traction, it will step out but you have to try really hard, like turn wheels and hit it, when it does go sideways the whole cars moves sideways unlike
open pegleg diffs, this could cause dramas, you just need to be ready for it.
1302Steve
Pete,
u have u2u, u do