Some guys have used late '80's Dodge Caravan rear leaf springs on the AD trucks.You'll need the spring mounts from the Caravan. Chassis Engineering and Total Cost Involved make a rear spring kit. I've used two kits from Chassis Emgineering. Be prepared to" make" the Chassis Engineering springs and mounts fit. Their "bolt-in" kit are not exact in their measurements. You'll have to do a lot of measuring and slotting of holes etc. If you are a fabricator , then no problem. If you've never done any modifying before then get someone to help you.
