Is there a difference between GTO and Firebird dual snorkel air cleaners? If so, aside from putting it on the car to check the fit(the front clip is off)is there a way to know which one you have? I have one that sits very low on the manifold and was represented to be a '69 firebird air cleaner, but the date code on the inside shows '70. I need to figure out if this one will work.