“I replaced my rear Air springs with Strutmaster regular springs last weekend. The entire job took about 3 hours and most of that time was getting my Expedition lifted high enough work on it. The jacks that I have, lifted the Expedition high enough to to change the tire but not high enough to pull the axle down to provide room to install the new spring (For safety, I did use jack stands once the vehicle was lifted). Once that was solved the replacement went smoothly.
All in all I’m very happy with the springs and I’m glad to be rid of my problematic rear air suspension. If and when the front suspension goes, I will definitely replace it with you standard spring/shock front suspension kit.