Suspension, Brakes and Tires Discussion, About the factory air ride... in Item Specific Cadillac Discussion; The factory rear air ride suspension adjusts to level the car, so technicially I can leave the rear alone if ...
You want the car to maintain it's stance. In other words if you lower the front you need to lower the rear to keep the car stable. The level ride height is adjustable so yes you can lower the car all around with the right springs.
What's the car.
If you're going to do this do it right. Get professional help or you could very easily end up with a car that's dangerous to drive.