I am wondering if anyone has the factory specs. for the spacing between the convertible roof frame rails on a 1972 skylark convertible. Any assistance would be appreciated.

The correct spacing for the Skylark rear bow is 20 1/2 inches from the center of the rear bow to the top edge of the well molding (stainless) in the center of the car. This is the only measurement you will need to install your convertible top. The rest of the bows will line up automatically. If you want complete instructions on how to install your convertible top, look on my website in the convertible section.