Do you have windows?
You might be able to use existing panels as patterns for wood etc.
I have a Ford but I want to insulate the walls below the windows and and make new wall panels (wood and or upholstery/vinyl). I plan on adding cabinets later so will need anchor points for that and cargo hooks tied into the metal in the wall of the van.
Check this thread ...
Good thread, but that's for a cargo van. Much easier to insulate and panel than it is for our passenger vans.