Scuttle shake ? too distinct . A cracking noise , like say a broken support strut under the dash. I had the instrument cluster out twice and can't see anything loose or broken. Including two of the nuts that secure the dash assambly. All tight. Noise is the same with the hard top on or off. Nothing loose under the bonnet including the heater motor under the panel. I know noises travel but I feel I could reach out and touch it. The front suspension has had a major rebuild including the...