Just getting started on a 2017 RAM 5500 build. Crew CAB, 4x4, Hemi 6.4, 84" CA, 11 foot flatbed, Vintage Vanguard camper. The 5500 was a must for me, as I want to install a super single kit soon and the 5500 seems to be a good candidate.
The truck was previously an oilfield service truck from Alberta. So, almost zero rust but a TON of mud everywhere. After a ton of cleanup (and removal of a couple hundred pounds of oilfield mud) got a Vanguard vintage truck camper installed.
The interior is in very good condition for the age. Needs some interior minor roof repair. The actual roof skin on these old Vanguards was a single sheet of aluminum. Pretty cool!