I have 2020 sprinter 170 ext high roof 4x4 2,800 miles. Never been on a dirt road. Full 5 year EXTENDED 100k mileage fully transferable. This above and beyond original warranty.
Here's a list of most of the items:
Full backwoods adventure mods rear bumper with boxes.
Full backwoods adventure mods front bumper with winch.
Every led light possible.
3M heat resistant window tint including windshield.
Wrapped hood with air deflector.
Roof rack.
IKamper rooftop tent.
Haughton high efficiency AC.
Roambuilt side steps.
600 amp hour battle born with victron everything loaded.
Ventrigo Full size stainless steel fridge freezer combo still with factory wrapping. $2400
Full second skin audio thermal and acoustic insulation.
5 Coats on wheel Wells.
Dyna mat.
Insulated floor with commercial grade rubber. Indestructible.
Swivel seats
Mercedes 3 person recline seats.
Ambulance package from Mercedes
After market tires and rims.
Also stock tires and rims included.
Webasto diesel heater.
Mid city electronics global drone. Remote start, auto start etc.
Tern overland windows both sides.
Flare space both sides
Spod Full lighting on dash control.
Aviation rated first aid kit.
Also have extraction mats.
Custom back door mesh storage.
I have but not installed Maxx air fan
$1000 portable toilet. ever used. (Not installed)
Full aluminum struts for cabinet system.
Full water system.Lots of other miscellaneous items.

I could do a sick job and finish in 90 days or so if needed. Would need extra obviously based on build out.