Just bought a maggie. It was suppose to get installed wednesday at Stillen. However, my car had plans of its own. The casing from my differential is not matched up on both sides and when Cadillac took it apart, they said it was soup inside. I'm running 20 inch wheels and they think that could be the problem. I'm having second thoughts about the blower. Does anyone have 19's w/ low profile tires that are the same height as the stock size? What is your tire size?