The Sports differential cover is cast and manufactured in house from high grade, heat treated aluminium and CNC machined to exacting tolerances.This product is excellent choice for those using their vehicles for high performance and competition applications and can be machined to suit the use of external oil cooler and pump systems.It increases the oil capacity by approximately 1.5 litres, resulting in improved cooling and durability and improves rear end rigidity for towing and heavy duty load applications.Heavy duty powder coated mounting bracket and urethane bushes included for superior stability and durability, Helps to reducing axle tramp.Vehicle Applications- Holden Commodore VT - VZ- Pontiac GTO 2004-2006- Note: Aftermarket exhausts may cause clearance issues.