I am interested in purchasing a 1998-2004 Cadillac STS. I would like something with under 100k miles, but GOOD MAINTAINANCE is more important to me than mileage, especially the coolant system from what I have read. I would like 2000 or newer with white/charcoal/black exterior, but will take 98/99 or possibly another color with a good deal. Also, I am located in Michigan (FYI).