Does anyone know if these kits will fit on our cars? I was looking up specs and the kit for the 9-3SS is $2000 for fronts, while I can get the Baer kit (I like their products) for a Cobalt SS for right just over $1000. New brakes are due for my car soon so I figured why not go big. I'm having some trouble finding hub diameters for the two cars and also rotor thickness. I know that will not be a problem if the kit works because it comes with new calipers and everything, but I'd just like to know the thickness of the stock rotors for each car for comparison.