Front suspension needs to be figured out. Bag brackets and shock reloaction, as well as a steering tierod notch on the frame would get it down, but nobody makes drop spindles for the 3500, so its only going to lay as low as the front bags will compress.
Rear suspension is done, just need to be plumbed for air. Then sheet metal can be bent up to cover it back up and seal the van back off from the outside. just need to clean and undercoat the frame and powdercoat the moving removable components.
Need two new (used) side doors.
Front fender needs a touch of love.’
Thats really it. to make it a runner, then of course the skys the limit on how nutty you want to go.