Jimm 6/30/2012Try the many on-line auto parts sources; such as www.RockAuto.com or www.autopartswarehouse.com for the replacement parts. For example, they (Rock Auto) list a rear shock conversion kit for around $137.00 for your vehicle.
aprser 12/3/2012Arnott Industries sells them for $99.00, they are in Florida, have used them no problems. They sell a complete kit Pump/2 airbags for $365.00.
BIGGEN 12/3/2012get some struts off a ford and put them on to get rid of air bags