Answer
Well the thing it there are two diffrent spacing for 5 lugs. 5x100 and 5x114 so sheck that first. it that is nice make sure you can fit the backspacing. the backspacing on the wheel shou look like ex: 35mm, 37mm, 40mm, etc... it sould fit the backspacing ok dut to the calipers on the mustang are larger and didnt have a problem so those should not. check with a local tire shop if you need continued help.