1970 Nova How do you tell if it is a SS?

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Rich, Thank you for the information. The hood has the insulation on the underside but I did not feel the supports. The car was repainted at some point so there may be a reason that the hood could have been changed. All the other stuff looks original to the car. The 12-bolt posi rear end is still throwing me a curve because of the 2 letter code instead of the 3 letter code that I expected for a 1970 Nova but the axle date code is with in a month of the car's build date.
Mark Sheppard