T/A Performance
T/A Performance's rearend girdle is an easy way to add support to the 8.8 housing and the internals of the rearend. The TA girdle is made from 3560 aircraft-grade aluminum and is heat-treated to T6 specs. Each cover has a fill and drain port for easy service, and it comes with two load bolts with swivel feet for bearing cap support. The girdles have shown a decrease in operating temperature of up to 15 degrees, which will definitely help in adding life to the rear. The girdle runs for $159.
Torsen
Torsen offers the T-1 and T-2 differentials for the 8.8-inch rear. Both items are based on torque sensing and biasing systems, though the T-1 utilizes Torsen's patented INVEX system, while the T-2 has the patented EQUVEX system. Both differentials are parallel axis gear configurations, which provide better gear mesh for lower noise and less backlash. The T-2 also has longer side gears for more flexibility in regards to axle spline location. Contact Torsen for pricing and application.
UPR Products
Known mostly for its appearance-enhancing products, UPR offers an 8.8 rearend stud girdle kit for $129.99. While the girdle is great for drag racing and road racing applications, it is made with the street enthusiast in mind. Designed to handle higher-than-stock horsepower levels, the girdle comes with all necessary gaskets and hardware.