The LSD works really well in the front with 90wt gear oil or 1000 diff oil. Right now Justin is using the pin diffs with 5/20/3.
The stock Cen bearings are great. We use Advantage Ceramic Bearings with the double rubber seals and they work great also. They are much lighter and roll very free. We do take both rubber seals out and clean the grease out. Then put light bearing oil in.