I'm heading out tomorrow to look at 2 mustang gt's. They are both 2005 models. Automatics. Coupes. one has 21K and the other 35K. Other than service records, car fax, paint and body, test drive. Is there anything specific I should be checking for/looking for on the 2005 models? I've read about the spark plug issue and the roof leak issue. Anything else??