Rear end sits high

I have a 91 town car that seems to sag in the front, from what I can see on other town cars. How can I adjust it so its level again?

Hello

Common problem the front springs are worn un even. I believe Ford made a shim kit to correct this. New front springs are always an option.

Is the front low or the rear high? If the rear is high, it could be that the leveling mechanism is not working properly. I assume you still have the air springs.