I'm dissembling the '52 Suburban and found Gabriel Hi-Jacker air shocks on the rear. The schraeder valve still had the cap on and the lines were hooked up, so why not test them out, I thought to myself. To my amazement, they worked and raised the wagon at least 4 inches! They are holding air after one week. The last time the vehicle was registered was 1979. Good ole American quality! After reading about air shocks, all the major manufacturers (Gabriel, Monroe, etc) describe them "for towing or hauling heavy loads" but nothing about adjusting ride height for all the time driving. How many forum members are running air shocks? Any reason why I might want to replace them with modern air shocks, vs the standard rear shocks? I will be using Rusty Hope's shock relocation brackets for the front.