I had no clue about the exhaust and bumper differences on the street versions
Let me Edit this, I thought they all had side pipes and not a clue about tail pipes, 289 Cobra's or 427's..
At least he is driving it as thats what its made for and not some show queen car. Rumor was Bill Cosby was taken or took one on a test drive back in the day and it scared the crap out of him and wanted nothing to do with it. I bet he wishes he was able to drive one on the "street" now