It's pretty straight forward.
-new leaf perches (get the Mopar performance perches from your local Jeep or Dodge dealership as they are cheap and beefy)
-a 1310 sized Flange adapter (I do believe that Areostar minivans and Crown Vics with the 8.8 had this size, search the internet to confirm)
-4 flange adapter bolts if the axle doesn't already have them (get them from the Ford dealership, they are cheap, metric, and wicked strong. Hardware stores will likely not carry bolts strong enough for this application)
-95 Dakota rear flex brake line (might as well replace your 20 year old one while you're there)
-pick a way to adapt the e-brake lines if so desired (there are a few different methods out there in cyberspace)
-and anything else that your particular axle needs to get into shape