Ok here's what I found in my 67 ... Every point is 3 to 4 inches ( not easily measured in the car ). As best I could tell, the rear of the outer track is the shortest point. You show more difference in left and right and more ramp than what I find. I have another set of correct tracks ( taken apart ) in the basement. With their working/traveling parts removed I was able to stand all 4 risers side by side. Very little difference anywhere. So now I'm thinking those aren't 2nd gen' a-body tracks. Bolt them up and set them in will tell. Good luck
