We have two Sprinter chassis, upgraded by Whitefeather 4x4 Conversions in California. They are upgraded with Ford F350 and other custom parts to offer substantial off-road capabilities, including lifted ground clearance, 4x4 capacity, low range capability, locking differential, anti-slip, and more.
One is a 144" wheelbase single rear wheel chassis, and the other is 170" wheelbase dual rear wheel. These chassis can be 1) claimed by a prospective client for their custom ARV build, or 2) sold as-is to a Do-it-Yourself buyer. Please share any questions and we'd be happy to answer.
More info here.