When driving on a race track stopping power and grip is needed. That is missing from my og900.. The brakes are weak to say the least. And the parking brake is working on the front wheels, when it works.. The dampers/springs are stock Saab 84. What to do about this situation? The answer is Bilstein Sport dampers, Kilen lowering springs, 9000 brake calipers, Tar-Ox rotors, Tar-Ox brake pads, and 900 88- rear axle with brake calipers with parking brake. This means that i can mount 9000 rims or other rims that is 108/4. And to top it of i'm going to change all bushes to Powerflex.