I want to clean up my transmission pan (possibly my oil pan as well) with a wirebrush/wheel and then give it some primer and paint. Some of the black coating on it has rusted/flaked off and I just want to make sure I am not going to puncture the pan itself. 2003 Jeep Liberty Sport 3.7L. Thickness of the oil pan as well if you know it. I appreciate it and thanks for the help!