I am interested in getting a front end level kit for my 2500 4x4. My question is what size do I need to get. I saw various kits from 1 to 2 1/2 inches and dont know which one to get. All I want to do is get a little more space between the front wheels and the rear of the wheel wells. If I am not turning the wheels there is space, but if I hit a large bump and have the wheels turned, they come in contact with the wheel wells. I have 305's on there and thats the problem. Any idea's? Also, what does the level kit do to performace when towing. I assume that the front is lower to try and bring it even when you have a load in there. Thanks