I have a 66 Custom 500, 289, 4 dr sedan, no AC, and I need to know the stock ride height in order to know how much drop in the springs I need to order. I am currently running cut springs in front and Pontiac springs in rear. They have the car at the height I want but the spring rates are less than desirable for a lowered car. If anyone can get me a stock height measurement front and rear, it would be greatly appreciated! Thanks in advance!