The CVD's used are actually different from the current ones on the market. They use a longer axle and shorter dogbone. The hubs have quite a bit more distance between the bearings than stock. The outside bearing is in the original location while the inside bearing is further in. This places the pivot point of the CVD further in in relation to the outside hinge pin which causes the suspension to bind more. This will help with forward bite and rear end roll. It doesn't make the car "instantly better" like Trinity is saying it does, but just adds another tuning option to the car.
While the hubs allow you to adjust the roll center (height of the ballstud), the Skip Gear Camber Mod allows you to do this also. I think the Skip Gear mod is more effective as you change the roll center from the inside mounting position.