Professionally built by Outside Van (OSV) — one of the most respected custom van builders in the country. This is a purpose-built, expedition-grade conversion — not a DIY or mass-production RV.
Here’s a link to the van when it was new on Outside Van’s website: https://outsidevan.com/van-gallery/a-m-p-van/
Originally commissioned as a fully custom build for a high-profile client and executed to OSV’s highest standards. This van has a documented history.
Original conversion OSV invoice: $177,738.50
$70,000 chassis cost
$6,000 in upgrades
Total investment ≈ $253,000
55,000 exceptionally well-cared-for, mostly highway miles.
Rare 3500 Dually Platform:
• 170” High Roof 4×4
• 3500 Dually (six tires)
• Superior crosswind stability
• Increased payload and towing capacity (w/ tow hitch)
• Outstanding winter traction
• Includes newer studded winter tire set from Les Schwab
A far more planted and confidence-inspiring platform than a 2500 single rear wheel build.
Power & Electrical Architecture:
• OSV Stage 3 power system
• Magnum 2000W inverter/charger with integrated transfer switch
• 125W roof-mounted solar panel integrated into safari rack
• Dedicated solar charge controller
• 280XP high-output alternator (200 amps at idle)
• Dual alternator setup with external voltage regulator
• Shore power capability w/ included cable
• 6 110V outlets
• Five marine-grade dual USB charging ports
Upgraded:
• Converted from AGM to Battle Born 270Ah Smart Lithium battery w/ app monitoring
– Higher usable capacity
– Faster charge acceptance
– Integrated BMS protection
– Reduced weight
True multi-source charging from:
Alternator
Solar
Shore power
Proper multi-source charging architecture, not a basic camper system. Power is not an issue!
True Four-Season Capability:
• Webasto Dual Top EVO 6 diesel hydronic heat system (cabin + hot water)
• ESPAR diesel coolant heater for cold-weather engine preheat
• 12V rooftop A/C
Dual MaxAire fans with rain sensors
Fully insulated for both thermal performance and sound dampening, making it exceptionally quiet and comfortable in all climates.
Build Highlights:
• Fully custom OSV interior
• Stainless indoor shower + exterior hot/cold shower
• 23-gallon fresh water system
• Isotherm stainless refrigerator (Danfoss compressor)
• Induction cooktop
• Full dinette converts to approximately king size, very comfortable lower bunk
• 3-panel elevated bed system (42” under-bed clearance) queen size custom made accordion mattress easily folds out for a comfy top bunk.
• Custom made by OSV Safari roof rack
• Side-mounted custom OSV ladder
• Custom front & rear bumpers
• Extensive LED lighting package inside and out. Incredible illumination at night.
• Premium Alpine audio system w/ Apple Car Play
This is a professionally engineered OSV build on a rare 3500 dually chassis with a documented and interesting history, built to the highest level and maintained accordingly.
Serious inquiries only. Clean title. Full build sheet available.
Here is the link to Outside Van’s webpage for when the van was new (butcher block counters have been replaced by OSV), as well as an article I dug up on the van. This van has a very fun history, with appearances on TV.
https://outsidevan.com/van-gallery/a-m-p-van/
https://www.vanlifeadventure.com/featured/amp-the-ultimate-mercedes-sprinter-4×4-campervan/?nocache=1757242630