Question of leaf spring angle and rear leaf shackles

Wrong spring rate. Look how high the back of the car is.

Theses are the lightest springs made by Caltrac for this setup. And I would have to move the pin to bring the axle back. The rear glass is out but other than the seats the body is bare.

I think this is about 1000 pounds light at this time. without the front and rear glass, no engine or transmission, hood and fenders. ANd after looking at a od photo of my coronet in the same condition, it is riding the same way