Ah-HA!! I got one that hasn't been mentioned yet. The Cobra doesn't have the third brake light in the trunklid. Even the 96-98 Cobras had the third brake light in the trunklid. Also, check the VIN and look for the "D"
I can tell you this... he is sure! Someone already mentioned the trunklid. That reminds me.... I gotta snag an extra trunk lid before someone rear ends my car and they're not available anymore!