Hello all. I have a situation. I have come across a pair of new headers that are unidentifiable. The only part number to be found is : 213424A. They are supposed to fit a Cougar and I want to see if they will also fit a 72/302/4speed/Mustang Convertible with no power steering or brakes. Has anyone ever come across this part number as I have googled the crap out of it and continuously came up blank. Thanks, Nick.