Barracuda standard dash Clock

Looking for a parts breakdown for the standard clock. I have the clock with the 90 degree angle gears on the back, the larger steel tube that is about 1/2 inch dia. by 2 inches long. A shaft with multiple diameters on it, not sure if one is broken off ? And what knob is correct for a 71. Just not sure what I missing before searching for parts.
Author: douglas17