How do i raise an 89 sedan deville with air struts i've ripped out my high pressure line twice and have decided to raise the car and might put some bigger rims on it

You should have coil over stuts/shocks. On the rear you will have to put a coil kit on, but the front is ready to be changed. All you have to do is replace the air shocks with normal shocks with coil springs/helper springs. You can normally find these kits at auto supply stores, but you can also find them online, and possibly eBay. Make sure to shop around before you make a purchase. Your other option is to replace your air bags with lifter shocks. You would run the air lines to a convenient place where you can air them up manually. This would allow you to change the height of the car and the ride of the car. But this will make the "Cadillac ride" become more of a truck feel. Hope this helps you with your decision.