I have an A4 Avant Quattro 2.8 Tip. I would like to increase the ground clearance maybe 5 to 10 cm. High profile tires. Also, use stronger gas shocks if necessary, maybe Boge or Bilstein. What about the bars that go across under the hood for tougher cornering. I will be taking the car to a country where the conditions of the roads are very bad and very hilly. If there is a chip somewhere where I could get more low end torque. Any other modifications? I know I am probably the only one going the other directions. Everyone I have seen wants to lower the car, z rated tires, etc...Any suggestion helps..<p>Thanks