If I remember correctly, you can just use any air ride shocks. I went to pep boys for mine years ago. Jack the rear of the car up and put it on jack stands at the frame. Unscrew the air lines. Jack the rear slightly to take pressure off. When you disconnect the shocks the rear will drop a few inches. Loosen the top two bolts first because they are the ones that will give you problems (if any). They're hard to get to and the shop manual says to bend a 1/2" wrench to reach the nut on top. Then unscrew the bottom bolt and yank the shock off the stud. Might have to pry or hammer it a little.